CN112014803B

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Info

Publication number: CN112014803B
Application number: CN202010830278.7A
Authority: CN
Inventors: 陈泽宗; 魏鋆宇; 赵晨
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2023-02-03
Anticipated expiration: 2040-08-18
Also published as: CN112014803A

Abstract

The invention provides a C-band transceiving component system based on a linear frequency modulation interrupted continuous wave. The invention combines a transmitting control switch, a first local oscillator module, a radio frequency transmitting module, a transmitting and receiving antenna, a local oscillator source phase-locked loop, a local oscillator source radio frequency amplifier, a local oscillator source band-pass filter, an equipower power divider, a receiving control switch, a radio frequency receiving module, a second local oscillator module and an intermediate frequency output module together for comprehensive design, and draws the components on a circuit board, thereby realizing the miniaturization and portability of the C-band radar transmitting and receiving component. The invention controls the transmitting control switch and the receiving control switch according to the transmitting gate control pulse through the radar mainboard system, obtains the linear frequency modulation interrupt continuous wave by using the gate control pulse sequence, enables the receiving channel not to work when transmitting the radio frequency signal, and receives the echo signal only when not transmitting the radio frequency signal. The invention also has the advantage of improving the signal-to-noise ratio of the radio-frequency signal and the intermediate-frequency echo signal transmitted by the transceiving component system.

Description

Translated fromChinese

一种基于线性调频中断连续波的C波段收发组件系统A C-band Transceiver System Based on LFM Interrupted Continuous Wave

技术领域technical field

本发明属于微波多普勒雷达技术领域，尤其是涉及一种基于线性调频中断连续波的C波段收发组件系统。The invention belongs to the technical field of microwave Doppler radar, in particular to a C-band transceiver component system based on linear frequency modulation interruption continuous wave.

背景技术Background technique

地球表面的百分之七十一被海水覆盖，海洋对人类有着至关重要的意义。海洋的开发利用以及海洋权益的保护使得对海洋的检测越来越受到人们的重视。微波雷达因此应运而生，典型的有S波段雷达、C波段雷达、X波段雷达等，该类雷达能够获取海洋、海流、海面风场等基本的海态参数、且其测量精度较高。Seventy-one percent of the earth's surface is covered by seawater, and the ocean is of vital importance to human beings. The development and utilization of the ocean and the protection of ocean rights and interests make the detection of the ocean more and more people's attention. Microwave radars emerged as the times require, typically including S-band radars, C-band radars, and X-band radars. This type of radar can obtain basic sea state parameters such as oceans, currents, and sea surface wind fields, and its measurement accuracy is high.

随着现代雷达技术的不断发展，海洋中测波雷达由于其性能上的诸多优点，逐渐成为雷达设备中的主流。其中收发组件在雷达系统中承担着重要的作用，收发组件的优劣会直接影响雷达设备的性能。而C波段测波雷达也是由S波段测波雷达演变发展过来的，传统的发射、接收通道都是分别制作其发射机和接收机为两个单独的固定系统，再用射频连接线将其连接，使得雷达系统过于复杂，而分别制作发射机和接收机也大大增加了人力和物力上的耗费。而系统过多的连接也会带来更多的噪声、损耗等影响，使得无法获取准确有效的雷达数据。With the continuous development of modern radar technology, ocean wave radar has gradually become the mainstream of radar equipment due to its many advantages in performance. Among them, the transceiver component plays an important role in the radar system, and the quality of the transceiver component will directly affect the performance of the radar equipment. The C-band wave-measuring radar is also evolved from the S-band wave-measuring radar. The traditional transmitting and receiving channels are made of two separate fixed systems, the transmitter and the receiver, and then connected by radio frequency cables. , making the radar system too complex, and making the transmitter and receiver separately also greatly increases the cost of manpower and material resources. Too many connections in the system will also bring more noise, loss and other impacts, making it impossible to obtain accurate and effective radar data.

发明内容Contents of the invention

本发明主要是解决上述技术所存在的技术问题；提供了一种基于线性调频中断连续波的C波段收发组件系统。本发明将发射控制开关、第一本振模块、射频发射模块、收发天线、本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、接收控制开关、射频接收模块、第二本振模块、中频输出模块组合在一起进行综合设计，并绘制在一块电路板上，使得C波段测波雷达的收发组件更加小型化与便携化。The present invention mainly solves the technical problems existing in the above-mentioned technologies; it provides a C-band transceiver component system based on linear frequency modulation interruption continuous wave. In the present invention, the transmission control switch, the first local oscillator module, the radio frequency transmitting module, the transceiver antenna, the phase-locked loop of the local oscillator source, the radio frequency amplifier of the local oscillator source, the band-pass filter of the local oscillator source, the power divider of equal power, and the receiving control switch , RF receiving module, second local oscillator module, and intermediate frequency output module are combined for comprehensive design and drawn on a circuit board, making the transceiver components of the C-band wave measuring radar more miniaturized and portable.

本发明还有一目的是解决现有技术所存在的技术问题；提供了一种新型本振源电路设计，其锁相环输出信号源频率范围较广，为4.770～5.065GHz可调频率，幅度为0dBm，有效的使得收发组件设计的通用性大大提升，还避免了空间中其他频率的信号对雷达回波信号的干扰；Another purpose of the present invention is to solve the technical problems existing in the prior art; to provide a new type of local oscillator circuit design, the phase-locked loop output signal source frequency range is relatively wide, 4.770 ~ 5.065GHz adjustable frequency, the amplitude is 0dBm, which effectively greatly improves the versatility of the transceiver component design, and also avoids the interference of other frequency signals in the space on the radar echo signal;

本发明再有一目的是解决现有技术所存在的技术问题；提供了一种利用发射门控脉冲和接收门控脉冲分别控制射频发射信号和中频回波信号，用门控脉冲序列得到了线性调频中断连续波，在发射射频信号时使接收通道不工作，不发射射频信号时接收通道才接收回波信号，扩大了发射通道和接收通道的动态范围，提高了接收通道的灵敏度。Another object of the present invention is to solve the technical problems existing in the prior art; to provide a method of controlling the radio frequency transmission signal and the intermediate frequency echo signal by using the transmission gating pulse and the receiving gating pulse respectively, and the linear frequency modulation is obtained by using the gating pulse sequence The continuous wave is interrupted, the receiving channel does not work when the radio frequency signal is transmitted, and the receiving channel receives the echo signal when the radio frequency signal is not transmitted, which expands the dynamic range of the transmitting channel and the receiving channel, and improves the sensitivity of the receiving channel.

本发明最后一目的是解决现有技术所存在的技术问题；提供了一种发射通道进行一次混频，接收通道进行两次混频的设计方法，提升了收发组件系统发射射频信号以及中频回波信号的信噪比，提高了雷达系统运行的稳定性和可靠性。The last purpose of the present invention is to solve the technical problems existing in the prior art; it provides a design method in which the transmitting channel is mixed once and the receiving channel is mixed twice, which improves the radio frequency signal transmission and intermediate frequency echo of the transceiver component system. The signal-to-noise ratio of the signal improves the stability and reliability of the radar system operation.

本发明的上述技术问题主要是通过下述技术方案得以解决的。The above-mentioned technical problems of the present invention are mainly solved through the following technical solutions.

一种基于线性调频中断连续波的C波段收发组件系统，其特征在于，包括：发射控制开关、第一本振模块、射频发射模块、收发天线、本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、接收控制开关、射频接收模块、第二本振模块、中频输出模块；A C-band transceiver component system based on linear frequency modulation interrupted continuous wave, characterized in that it includes: a transmission control switch, a first local oscillator module, a radio frequency transmission module, a transceiver antenna, a local oscillator source phase-locked loop, and a local oscillator source radio frequency amplifier , local oscillator source bandpass filter, equal power splitter, receiving control switch, radio frequency receiving module, second local oscillator module, intermediate frequency output module;

所述发射控制开关与所述第一本振模块连接；所述第一本振模块与所述射频发射模块连接；所述射频发射模块与所述收发天线连接；所述的本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、发射控制开关、接收控制开关依次连接；所述的射频接收模块、中频输出模块、第二本振模块依次连接；所述收发天线与所述射频接收模块连接；所述接收控制开关与所述的射频接收模块连接。The transmitting control switch is connected to the first local oscillator module; the first local oscillator module is connected to the radio frequency transmitting module; the radio frequency transmitting module is connected to the transceiver antenna; the local oscillator source is phase-locked The ring, the local oscillator source radio frequency amplifier, the local oscillator source bandpass filter, the equal power power divider, the transmitting control switch, and the receiving control switch are connected in sequence; the radio frequency receiving module, the intermediate frequency output module, and the second local oscillator module are connected in sequence ; the transceiver antenna is connected to the radio frequency receiving module; the receiving control switch is connected to the radio frequency receiving module.

所述的第一本振模块包括：雷达主板系统、第一本振开关、发射端本振带通滤波器、发射端本振射频放大器、发射端本振低通滤波器、发射端本振混频器；所述的雷达主板系统、第一本振开关、发射端本振带通滤波器、发射端本振射频放大器、发射端本振低通滤波器、发射端本振混频器依次连接；所述发射端本振混频器与所述发射控制开关连接；The first local oscillator module includes: a radar main board system, a first local oscillator switch, a transmitter local oscillator bandpass filter, a transmitter local oscillator radio frequency amplifier, a transmitter local oscillator low-pass filter, a transmitter local oscillator mixer frequency device; the radar mainboard system, the first local oscillator switch, the transmitter local oscillator bandpass filter, the transmitter local oscillator radio frequency amplifier, the transmitter local oscillator low pass filter, and the transmitter local oscillator mixer are connected in sequence ; The transmitter local oscillator mixer is connected to the transmitter control switch;

所述的射频发射模块包括：发射端射频带通滤波器、发射端射频放大器、发射端射频低通滤波器；所述的发射端射频带通滤波器、发射端射频放大器、发射端射频低通滤波器依次连接；所述发射端本振混频器与所述发射端射频带通滤波器连接；The radio frequency transmission module includes: a transmitter radio frequency bandpass filter, a transmitter radio frequency amplifier, a transmitter radio frequency low pass filter; the transmitter radio frequency bandpass filter, a transmitter radio frequency amplifier, a transmitter radio frequency low pass filter The filters are connected in sequence; the local oscillator mixer at the transmitting end is connected with the radio frequency bandpass filter at the transmitting end;

所述的射频接收模块包括：接收端限幅器、接收端射频放大器、接收端带通滤波器、接收端射频混频器；所述的接收端限幅器、接收端射频放大器、接收端带通滤波器、接收端射频混频器依次相连；所述接收端射频混频器与所述接收控制开关连接；The radio frequency receiving module includes: receiving end limiter, receiving end radio frequency amplifier, receiving end bandpass filter, receiving end radio frequency mixer; described receiving end limiter, receiving end radio frequency amplifier, receiving end bandpass The pass filter and the radio frequency mixer at the receiving end are connected in sequence; the radio frequency mixer at the receiving end is connected with the receiving control switch;

所述的中频输出模块包括：接收端中频带通滤波器、接收端中频射频放大器、接收端中频混频器、接收端中频声表滤波器、接收端中频低噪声放大器；所述的接收端中频带通滤波器、接收端中频射频放大器、接收端中频混频器、接收端中频声表滤波器、接收端中频低噪声放大器依次相连；所述接收端射频混频器与所述接收端中频低噪声放大器连接；The intermediate frequency output module includes: receiving end intermediate frequency bandpass filter, receiving end intermediate frequency radio frequency amplifier, receiving end intermediate frequency mixer, receiving end intermediate frequency SAW filter, receiving end intermediate frequency low noise amplifier; The frequency bandpass filter, the receiving end intermediate frequency radio frequency amplifier, the receiving end intermediate frequency mixer, the receiving end intermediate frequency SAW filter, and the receiving end intermediate frequency low noise amplifier are connected in sequence; the receiving end radio frequency mixer and the receiving end intermediate frequency low Noise amplifier connection;

所述的第二本振模块包括：接收端本振带通滤波器、接收端本振射频放大器、接收端本振低通滤波器；所述的接收端本振带通滤波器、接收端本振射频放大器、接收端本振低通滤波器依次相连；所述接收端中频混频器与所述接收端本振低通滤波器连接。The second local oscillator module includes: a receiving end local oscillator bandpass filter, a receiving end local oscillator radio frequency amplifier, a receiving end local oscillator low pass filter; the receiving end local oscillator bandpass filter, a receiving end local oscillator The radio frequency amplifier of the oscillator and the local oscillator low-pass filter of the receiving end are connected in sequence; the intermediate frequency mixer of the receiving end is connected with the local oscillator low-pass filter of the receiving end.

一种基于线性调频中断连续波的C波段收发组件系统射频信号发射和回波信号采集的方法为：A method for radio frequency signal transmission and echo signal acquisition of a C-band transceiver component system based on chirp interrupted continuous wave is:

步骤1：雷达主板系统根据发射门控脉冲控制发射控制开关，结合第一本振模块产生第一本振混频信号，通过射频发射模块、收发天线产生发射射频信号至探测目标；Step 1: The radar main board system controls the transmission control switch according to the transmission gating pulse, combines with the first local oscillator module to generate the first local oscillator mixing signal, and generates the transmitted radio frequency signal to the detection target through the radio frequency transmission module and the transceiver antenna;

步骤2：通过本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器产生第一路等功率功分本振源信号、第二路等功率功分本振源信号，将第一路等功率功分本振源信号输出至发射端本振混频器，将第二路等功率功分本振源信号输出至所述接收端射频混频器；Step 2: Generate the first path of equal power power division local oscillator signal and the second path of equal power power split For the local oscillator signal, output the first equal-power power-divided local oscillator signal to the transmitter local oscillator mixer, and output the second equal-power power-divided local oscillator signal to the receiver radio frequency mixer;

步骤3：通过收发天线、射频接收模块将回波信号经过处理得到带通滤波后射频回波信号，雷达主板系统通过接收门控脉冲控制接收控制开关，通过第一次混频处理得到第一次混频后中频回波信号；通过第二本振模块得到低通滤波后第二本振信号；通过中频输出模块将第一次混频后中频回波信号进行第二次混频处理得到第二次混频后中频回波信号，通过进一步处理得到放大后中频回波信号；Step 3: Process the echo signal through the transceiver antenna and RF receiving module to obtain the band-pass filtered RF echo signal. The radar main board system controls the receiving control switch by receiving the gating pulse, and obtains the first time through the first mixing process. The intermediate frequency echo signal after frequency mixing; the second local oscillator signal after low-pass filtering is obtained through the second local oscillator module; the intermediate frequency echo signal after the first mixing is processed through the intermediate frequency output module for the second time to obtain the second The intermediate frequency echo signal after secondary mixing is further processed to obtain the amplified intermediate frequency echo signal;

作为优选，步骤1所述雷达主板系统根据发射门控脉冲控制发射控制开关，结合第一本振模块产生第一本振混频信号为：As a preference, the radar main board system described in step 1 controls the launch control switch according to the launch gating pulse, and combines the first local oscillator module to generate the first local oscillator mixing signal as follows:

通过雷达主板系统输入第一本振信号，所述雷达主板系统输出高电平至所述的第一本振开关，所述的第一本振开关在高电平时导通，将第一本振信号输出至所述发射端本振带通滤波器；The first local oscillator signal is input through the radar motherboard system, and the radar motherboard system outputs a high level to the first local oscillator switch, and the first local oscillator switch is turned on at a high level, and the first local oscillator The signal is output to the local oscillator bandpass filter at the transmitting end;

第一本振信号通过所述发射端本振带通滤波器进行滤波得到带通滤波后第一本振信号；带通滤波后第一本振信号通过发射端本振射频放大器进行放大得到放大后第一本振信号；放大后第一本振信号通过发射端本振低通滤波器进行滤波得到低通滤波后第一本振信号；The first local oscillator signal is filtered by the local oscillator band-pass filter at the transmitting end to obtain the first local oscillator signal after band-pass filtering; after the band-pass filtering, the first local oscillator signal is amplified by the local oscillator radio frequency amplifier at the transmitting end to obtain the amplified The first local oscillator signal; after the amplification, the first local oscillator signal is filtered by a local oscillator low-pass filter at the transmitting end to obtain the first local oscillator signal after low-pass filtering;

所述雷达主板系统输出发射门控脉冲至所述发射控制开关，发射门控脉冲为占空比为50％的方波，所述发射控制开关在高电平时导通，将第一路等功率功分本振源信号输出至所述发射端本振混频器；The radar mainboard system outputs a launch gating pulse to the launch control switch, and the launch gate pulse is a square wave with a duty cycle of 50%. The power-divided local oscillator source signal is output to the local oscillator mixer at the transmitting end;

低通滤波后第一本振信号与所述发射控制开关输出的第一路等功率功分本振源信号通过所述发射端本振混频器进行混频得到第一本振混频信号并输出至所述发射端射频带通滤波器；After low-pass filtering, the first local oscillator signal is mixed with the first equal-power-divided local oscillator source signal output by the transmitting control switch through the local oscillator mixer at the transmitting end to obtain a first local oscillator mixed frequency signal and output to the radio frequency bandpass filter at the transmitting end;

步骤1所述通过射频发射模块、收发天线产生发射射频信号至探测目标为：In step 1, the radio frequency signal generated by the radio frequency transmitting module and the transceiver antenna to the detection target is:

第一本振混频信号通过发射端射频带通滤波器进行滤波得到带通滤波后射频信号；带通滤波后射频信号通过发射端射频放大器进行放大得到放大后射频信号；放大后射频信号通过发射端射频低通滤波器进行滤波得到低通滤波后射频信号；低通滤波后射频信号输出至所述收发天线，由所述收发天线发射射频信号至探测目标；第一本振混频信号为线性调频中断连续波信号；The first local oscillator mixed frequency signal is filtered by the RF band-pass filter at the transmitting end to obtain a band-pass filtered RF signal; the band-pass filtered RF signal is amplified by the RF amplifier at the transmitting end to obtain an amplified RF signal; the amplified RF signal is passed through the transmitter The end radio frequency low-pass filter performs filtering to obtain a low-pass filtered radio frequency signal; the low-pass filtered radio frequency signal is output to the transceiver antenna, and the radio frequency signal is transmitted to the detection target by the transceiver antenna; the first local oscillator mixing signal is linear FM interrupt continuous wave signal;

所述雷达主板系统输出低电平至所述的第一本振开关，所述的第一本振开关在低电平时断开；The radar mainboard system outputs a low level to the first local oscillator switch, and the first local oscillator switch is disconnected when the level is low;

作为优选，步骤2所述通过本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器产生第一路等功率功分本振源信号、第二路等功率功分本振源信号为：As a preference, as described in step 2, the first path of equal-power power division local oscillator signal, the second path The local oscillator signal with equal power and power division is:

所述雷达主板系统输出锁相环信号幅度、锁相环信号频率至所述的本振源锁相环；所述的本振源锁相环根据锁相环信号幅度、锁相环信号频输出本振源信号；本振源信号通过所述本振源射频放大器进行放大得到放大后本振源信号；放大后本振源信号通过本振源带通滤波器进行滤波得到带通滤波后本振源信号；带通滤波后本振源信号通过所述等功率功分器进等功率功分后得到功率相同的第一路等功率功分本振源信号、第二路等功率功分本振源信号；The radar motherboard system outputs the phase-locked loop signal amplitude and phase-locked loop signal frequency to the described local oscillator source phase-locked loop; the described local oscillator source phase-locked loop outputs The local oscillator signal; the local oscillator signal is amplified by the local oscillator radio frequency amplifier to obtain the amplified local oscillator signal; the amplified local oscillator signal is filtered by the local oscillator band-pass filter to obtain the band-pass filtered local oscillator Source signal; after band-pass filtering, the local oscillator source signal passes through the equal-power power divider to obtain the first equal-power power-divided local oscillator source signal with the same power, and the second equal-power power-divided local oscillator signal. source signal;

步骤2所述将第二路等功率功分本振源信号输出至所述接收端射频混频器为：In step 2, the output of the second equal-power-divided local oscillator source signal to the RF mixer at the receiving end is as follows:

所述雷达主板系统输出发射门控脉冲至所述发射控制开关，所述发射控制开关在高电平时导通，将第一路等功率功分本振源信号输出至所述发射端本振混频器；The radar main board system outputs a launch gating pulse to the launch control switch, and the launch control switch is turned on when it is at a high level, and outputs the first equal-power power-divided local oscillator signal to the transmitter local oscillator mixer. frequency converter;

所述雷达主板系统输出接收门控脉冲至所述接收控制开关，所述接收控制开关在低电平时导通，将第二路等功率功分本振源信号输出至所述接收端射频混频器。The radar mainboard system outputs the receiving gating pulse to the receiving control switch, and the receiving control switch is turned on at a low level, and outputs the second equal-power and power-divided local oscillator signal to the receiving end for radio frequency mixing device.

作为优选，步骤3所述通过收发天线、射频接收模块将回波信号经过处理得到带通滤波后射频回波信号为：As a preference, in step 3, the echo signal is processed by the transceiver antenna and the radio frequency receiving module to obtain the bandpass filtered radio frequency echo signal as:

通过所述收发天线接收回波信号，回波信号输入至所述接收端限幅器得到限幅射频回波信号；限幅射频回波信号通过接收端射频放大器进行放大得到放大后射频回波信号；放大后射频回波信号通过接收端带通滤波器进行带通滤波得到带通滤波后射频回波信号；The echo signal is received by the transceiver antenna, and the echo signal is input to the limiter at the receiving end to obtain a limited radio frequency echo signal; the limited radio frequency echo signal is amplified by the radio frequency amplifier at the receiving end to obtain an amplified radio frequency echo signal ; The amplified radio frequency echo signal is band-pass filtered by a band-pass filter at the receiving end to obtain a band-pass filtered radio frequency echo signal;

步骤3所述通过第一次混频处理得到第一次混频后中频回波信号为：The intermediate frequency echo signal after the first mixing obtained by the first mixing process in step 3 is:

所述雷达主板系统输出接收门控脉冲至所述接收控制开关，接收门控脉冲为占空比为50％的方波，所述接收控制开关在低电平时导通，将第二路等功率功分本振源信号输出至所述接收端射频混频器；The radar main board system outputs the receive gate control pulse to the receive control switch, the receive gate control pulse is a square wave with a duty ratio of 50%, the receive control switch is turned on at low level, and the second circuit equal power The power-divided local oscillator source signal is output to the RF mixer at the receiving end;

带通滤波后射频回波信号与所述接收控制开关输出的第二路等功率功分本振源信号通过所述接收端射频混频器进行混频得到第一次混频后中频回波信号并输出至所述接收端中频带通滤波器；第一次混频后中频回波信号为线性调频中断连续波信号；The RF echo signal after band-pass filtering is mixed with the second equal-power-divided local oscillator signal output by the receiving control switch through the RF mixer at the receiving end to obtain an intermediate frequency echo signal after the first mixing And output to the intermediate frequency bandpass filter of the receiving end; the intermediate frequency echo signal after the first mixing is a linear frequency modulation interrupted continuous wave signal;

步骤3所述通过第二本振模块得到低通滤波后第二本振信号为：In step 3, the second local oscillator signal obtained through the second local oscillator module after low-pass filtering is:

通过所述雷达主板系统输入第二本振信号，将第二本振信号输出至所述接收端本振带通滤波器；第二本振信号通过接收端本振带通滤波器进行带通滤波得到带通滤波后第二本振信号；带通滤波后第二本振信号通过接收端本振射频放大器进行放大得到放大后第二本振信号；放大后第二本振信号通过接收端本振低通滤波器进行低通滤波得到低通滤波后第二本振信号；The second local oscillator signal is input through the radar motherboard system, and the second local oscillator signal is output to the receiving end local oscillator bandpass filter; the second local oscillator signal is bandpass filtered through the receiving end local oscillator bandpass filter Obtain the second local oscillator signal after band-pass filtering; the second local oscillator signal after band-pass filtering is amplified by the local oscillator RF amplifier at the receiving end to obtain the amplified second local oscillator signal; the amplified second local oscillator signal passes through the local oscillator at the receiving end The low-pass filter performs low-pass filtering to obtain the second local oscillator signal after the low-pass filtering;

步骤3所述通过中频输出模块将第一次混频后中频回波信号进行第二次混频处理得到第二次混频后中频回波信号为：In step 3, the intermediate frequency echo signal after the first mixing is subjected to the second mixing process through the intermediate frequency output module to obtain the intermediate frequency echo signal after the second mixing:

第一次混频后中频回波信号通过所述接收端中频带通滤波器进行带通滤波得到带通滤波后第一次的混频中频回波信号；带通滤波后第一次混频的中频回波信号通过接收端中频射频放大器进行放大得到放大后第一次混频的中频回波信号；放大后第一次混频的中频回波信号与所述接收端本振低通滤波器输出的低通滤波后第二本振信号通过接收端中频混频器进行混频得到第二次混频后中频回波信号；After the first mixing, the intermediate frequency echo signal is band-pass filtered through the intermediate frequency bandpass filter at the receiving end to obtain the first mixing intermediate frequency echo signal after the band-pass filtering; The intermediate frequency echo signal is amplified by the intermediate frequency radio frequency amplifier at the receiving end to obtain the intermediate frequency echo signal mixed for the first time after amplification; the intermediate frequency echo signal mixed for the first time after amplification is output with the local oscillator low-pass filter at the receiving end After the low-pass filtering, the second local oscillator signal is mixed by the intermediate frequency mixer at the receiving end to obtain the intermediate frequency echo signal after the second mixing;

步骤3所述通过进一步处理得到放大后中频回波信号为：The amplified intermediate frequency echo signal obtained by further processing in step 3 is:

第二次混频后中频回波信号通过接收端中频声表滤波器进行滤波得到滤波后中频回波信号；滤波后中频回波信号通过接收端低噪声放大器进行放大得到放大后中频回波信号。After the second frequency mixing, the intermediate frequency echo signal is filtered by the intermediate frequency SAW filter at the receiving end to obtain the filtered intermediate frequency echo signal; the filtered intermediate frequency echo signal is amplified by the low noise amplifier at the receiving end to obtain the amplified intermediate frequency echo signal.

与现有技术相比，本发明具有以下优点和有益效果：Compared with the prior art, the present invention has the following advantages and beneficial effects:

本发明将发射控制开关、第一本振模块、射频发射模块、收发天线、本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、接收控制开关、射频接收模块、第二本振模块、中频输出模块组合在一起进行综合设计，并绘制在一块电路板上，使得C波段测波雷达的收发组件更加小型化与便携化。In the present invention, the transmission control switch, the first local oscillator module, the radio frequency transmitting module, the transceiver antenna, the phase-locked loop of the local oscillator source, the radio frequency amplifier of the local oscillator source, the band-pass filter of the local oscillator source, the power divider of equal power, and the receiving control switch , RF receiving module, second local oscillator module, and intermediate frequency output module are combined for comprehensive design and drawn on a circuit board, making the transceiver components of the C-band wave measuring radar more miniaturized and portable.

本发明的发射控制开关、第一本振模块、射频发射模块、收发天线组成了收发组件的发射通道，通过雷达主板系统提供发射门控脉冲信号，通过混频得到第一本振混频信号，第一本振混频信号由发射门控开关改变为线性调频中断连续波信号，进一步提升了雷达系统发射信号的信噪比。The transmission control switch of the present invention, the first local oscillator module, the radio frequency transmission module, and the transceiver antenna form the transmission channel of the transceiver assembly, and the transmission gating pulse signal is provided through the radar mainboard system, and the first local oscillator mixed frequency signal is obtained by frequency mixing. The first local oscillator frequency mixing signal is changed from a transmission gating switch to a linear frequency modulation interruption continuous wave signal, which further improves the signal-to-noise ratio of the radar system transmission signal.

本发明的射频接收模块、第二本振模块、中频输出模块组成了收发组件的接收通道，通过雷达主板系统提供的接收门控脉冲信号得到第一次混频后中频回波信号，第一次混频后中频回波信号由接收门控开关改变为线性调频中断连续波信号，通过接收端中频混频器进行混频得到第二次混频后中频回波信号，进一步提升了雷达回波信号的信噪比，为雷达信号进一步分析处理提供了高质量的回波信号。发射门控开关在发射射频信号时使接收通道不工作，接收门控开关在不发射射频信号时接收通道才接收回波信号，扩大了发射通道和接收通道的动态范围，提高了接收通道的灵敏度。The radio frequency receiving module of the present invention, the second local oscillator module, and the intermediate frequency output module form the receiving channel of the transceiver assembly, and the intermediate frequency echo signal after the first mixing is obtained through the receiving gating pulse signal provided by the radar motherboard system, and the first time After mixing, the intermediate frequency echo signal is changed from the receiving gating switch to the linear frequency modulation interruption continuous wave signal, and the intermediate frequency echo signal after the second mixing is obtained through the intermediate frequency mixer at the receiving end, which further improves the radar echo signal The signal-to-noise ratio provides high-quality echo signals for further analysis and processing of radar signals. The transmit gating switch makes the receiving channel inactive when transmitting radio frequency signals, and the receiving gating switch receives the echo signal only when the receiving channel does not transmit radio frequency signals, which expands the dynamic range of the transmitting channel and receiving channel, and improves the sensitivity of the receiving channel .

本发明的发射通道进行一次混频，接收通道进行两次混频的设计方法，提升了收发组件系统发射射频信号以及中频回波信号的信噪比，提高了雷达系统运行的稳定性和可靠性。The design method of performing frequency mixing once on the transmitting channel and twice mixing on the receiving channel of the present invention improves the signal-to-noise ratio of the radio frequency signal transmitted by the transceiver component system and the intermediate frequency echo signal, and improves the stability and reliability of the radar system operation .

附图说明Description of drawings

图1：是本发明系统结构简图。Fig. 1: is the schematic diagram of the system structure of the present invention.

图2：是本发明实例中的第一本振模块图。Fig. 2: is the first local oscillator module diagram in the example of the present invention.

图3：是本发明实例中的射频发射模块图。Fig. 3: is the radio frequency transmitting module diagram in the example of the present invention.

图4：是本发明实例中的本振源模块图。Fig. 4: is the block diagram of the local oscillator source in the example of the present invention.

图5：是本发明实例中的射频接收模块图。Fig. 5: is the radio frequency receiving module diagram in the example of the present invention.

图6：是本发明实例中的中频输出模块图。Fig. 6: is the intermediate frequency output module diagram in the example of the present invention.

图7：是本发明实例中的第二本振模块图。Fig. 7: is the second local oscillator module diagram in the example of the present invention.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

下面结合图1至图7描述本发明的具体实施方式为一种C波段的收发组件系统，其特征在于，包括：发射控制开关、第一本振模块、射频发射模块、收发天线、本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、接收控制开关、射频接收模块、第二本振模块、中频输出模块；The specific embodiment of the present invention is described below in conjunction with Fig. 1 to Fig. 7 as a C-band transceiver component system, which is characterized in that it includes: a transmission control switch, a first local oscillator module, a radio frequency transmitter module, a transceiver antenna, and a local oscillator source Phase-locked loop, local oscillator source RF amplifier, local oscillator source bandpass filter, equal power power divider, receiving control switch, radio frequency receiving module, second local oscillator module, intermediate frequency output module;

所述本振源锁相环选用的是HMC704LP4E芯片，其射频输入带宽为DC-8000MHz，内置19位4GHz的预分频器，典型相位噪声-112dBc/Hz@8GHz分配，50kHz偏移，输出频率为5.065GHz，幅度为0dBm的本振源信号；所述本振源射频放大器选用的是BW264芯片，增益为28dB，当所述的锁相环芯片输出频率为5.065GHz，幅度为0dBm，经过射频放大器输出端口应得到幅度为28dBm的信号；所述本振源带通滤波器选用的是SiMF4R9/R4芯片，通带范围为4.7G～5.0GHz，插损≤4dB；所述等功率功分器选用的是1分2的HJPD-2N-1N芯片，频率范围为600MHz～6GHz，阻抗为50欧，最大驻波比为1.4，隔离度≥20dB；所述收发天线选用的是C波段专用喇叭天线。The local oscillator source phase-locked loop uses HMC704LP4E chip, its RF input bandwidth is DC-8000MHz, built-in 19-bit 4GHz prescaler, typical phase noise -112dBc/Hz@8GHz distribution, 50kHz offset, output frequency It is 5.065GHz, the amplitude is the local oscillator source signal of 0dBm; what described local oscillator source RF amplifier selects is BW264 chip, and gain is 28dB, when described phase-locked loop chip output frequency is 5.065GHz, amplitude is 0dBm, after radio frequency The amplifier output port should get a signal with an amplitude of 28dBm; the local oscillator source bandpass filter is SiMF4R9/R4 chip, the passband range is 4.7G～5.0GHz, and the insertion loss is ≤4dB; the equal power power divider The 1:2 HJPD-2N-1N chip is selected, the frequency range is 600MHz ~ 6GHz, the impedance is 50 ohms, the maximum standing wave ratio is 1.4, and the isolation is ≥ 20dB; the transceiver antenna is a C-band dedicated horn antenna .

所述雷达主板系统选用的是FPGA+DSP为核心板的雷达主板；所述发射端本振带通滤波器选用的是SiBP1R05/R3-6B3芯片，通带范围为900MHz～1000MHz，插损≤2dB；所述发射端本振射频放大器选用的是NC10200C-103芯片，增益为22dB，当第一本振信号经过时，射频放大器输出端口应得到幅度为-4dBm的信号；所述射端本振低通滤波器选用的是LFCN-1000芯片，通带范围为0～1.0GHz，插损≤1dB；所述发射端本振混频器选用的是NC1748C-410M芯片，插损≤8dB。The radar motherboard system uses the radar motherboard with FPGA+DSP as the core board; the transmitter local oscillator bandpass filter uses the SiBP1R05/R3-6B3 chip, the passband range is 900MHz～1000MHz, and the insertion loss is ≤2dB ; The radio frequency amplifier of the transmitting end local oscillator was selected as NC10200C-103 chip, and the gain was 22dB. When the first local oscillator signal passed through, the output port of the radio frequency amplifier should obtain a signal whose amplitude was -4dBm; The LFCN-1000 chip is selected for the pass filter, the passband range is 0-1.0GHz, and the insertion loss is ≤1dB; the NC1748C-410M chip is selected for the local oscillator mixer at the transmitting end, and the insertion loss is ≤8dB.

所述发射端射频带通滤波器选用的是SiMF5R8/R4-6E4芯片，通带范围为5.7G～5.9GHz，插损≤4dB；所述发射端射频放大器选用的是BW278芯片，增益为22dB，当上变频混频信号经过时，射频放大器输出端口应得到幅度为2dBm的信号；所述发射端射频低通滤波器选用的是LFCN-6000芯片，通带范围为0～6.0GHz，插损≤1dB。The radio frequency bandpass filter at the transmitting end selects the SiMF5R8/R4-6E4 chip, the passband range is 5.7G～5.9GHz, and the insertion loss is ≤4dB; the radio frequency amplifier at the transmitting end selects the BW278 chip, and the gain is 22dB. When the up-conversion mixing signal passes, the output port of the RF amplifier should get a signal with an amplitude of 2dBm; the RF low-pass filter at the transmitting end is selected from the LFCN-6000 chip, and the passband range is 0-6.0GHz, and the insertion loss is ≤ 1dB.

所述接收端限幅器选用的是BW480芯片，插损≤0.4dB，防止天线接收的射频信号幅度过大烧毁接收通道；所述接收端射频放大器选用的是BW264芯片，增益为28dB，噪声系数为0.9；所述接收端带通滤波器选用的是SiMF5R8/R4-6E4芯片，通带范围为5.7G～5.9GHz，插损≤4dB；所述接收端射频混频器选用的是NC1748C-410芯片，插损≤8dB。The limiter at the receiving end selects a BW480 chip with an insertion loss of ≤0.4dB to prevent the radio frequency signal received by the antenna from burning the receiving channel; the RF amplifier at the receiving end selects a BW264 chip with a gain of 28dB and a noise figure of 0.9; the band-pass filter at the receiving end is SiMF5R8/R4-6E4 chip, the passband range is 5.7G～5.9GHz, and the insertion loss is ≤4dB; the RF mixer at the receiving end is NC1748C-410 Chip, insertion loss ≤ 8dB.

所述接收端中频带通滤波器选用的是SiBP1R05/R3-6B3芯片，通带范围为0.9G～1GHz，插损≤4dB；所述接收端中频射频放大器选用的是NC10200C-103芯片，增益为22dB；所述接收端中频混频器选用的是NC17126C-102M芯片，插损≤8dB；所述接收端中频声表滤波器选用的是SF0140芯片，通带范围为130～132MHz，插损≤1dB；所述接收端中频低噪声放大器选用的是NC11269C-105芯片，增益为32dB。The intermediate frequency band-pass filter at the receiving end selects the SiBP1R05/R3-6B3 chip, the passband range is 0.9G～1GHz, and the insertion loss is ≤4dB; the intermediate frequency RF amplifier at the receiving end selects the NC10200C-103 chip, and the gain is 22dB; the IF mixer at the receiving end uses the NC17126C-102M chip, and the insertion loss is ≤8dB; the IF SAW filter at the receiving end uses the SF0140 chip, the passband range is 130-132MHz, and the insertion loss is ≤1dB ; The intermediate frequency low noise amplifier at the receiving end selects the NC11269C-105 chip with a gain of 32dB.

所述接收端本振带通滤波器选用的是SF0815芯片，通带范围为785M～845MHz，插损≤2dB；所述接收端本振射频放大器选用的是NC10217C-106芯片，增益为32dB；所述接收端本振低通滤波器选用的是LFCN-1000芯片，通带范围为0～1.0GHz，插损≤1dB。The local oscillator bandpass filter at the receiving end selects the SF0815 chip, the passband range is 785M to 845MHz, and the insertion loss is ≤ 2dB; the local oscillator RF amplifier at the receiving end selects the NC10217C-106 chip, and the gain is 32dB; The LFCN-1000 chip is selected for the local oscillator low-pass filter at the receiving end, the passband range is 0-1.0GHz, and the insertion loss is ≤1dB.

线性调频连续波(FMCW)具有100％工作比，对于发射机和接收机共处一站的后向散射雷达来说，这种波形是不适用的，因为有两个困难无法解决：发射与接收之间的有效隔离，很强的发射信号会使接收机过载；由于传播损失，信号电平随距离急剧下降，信号的动态范围可达140dB以上，超出了任何现有接受设备的动态范围。而线性调频中断连续波(FMICW)却能克服这些困难。简单说，用一门控脉冲序列来控制FMCW波形就能得到FMICW波形，在发射时使接收机不工作，不发射时接收机才接收回波，导致最高可能工作比为50％。Chirped frequency-modulated continuous wave (FMCW) has a 100% duty cycle. For backscatter radars where the transmitter and receiver are co-located in one station, this waveform is not suitable because there are two difficulties that cannot be solved: Effective isolation between them, a strong transmitting signal will overload the receiver; due to propagation loss, the signal level drops sharply with distance, and the dynamic range of the signal can reach more than 140dB, which exceeds the dynamic range of any existing receiving equipment. However, linear frequency modulation interrupted continuous wave (FMICW) can overcome these difficulties. Simply put, the FMICW waveform can be obtained by controlling the FMCW waveform with a gated pulse sequence, and the receiver does not work when transmitting, and the receiver receives the echo when not transmitting, resulting in a maximum possible duty ratio of 50%.

本发明使用FMICW技术可解决发射与接收之间的隔离问题，大大提升了雷达接收机系统的隔离度，而接收机的动态范围也可控制在一个合理的范围，使得发射机和接收机共处一站的后向散射雷达系统可正常稳定工作，详细具体技术方案如下。The present invention uses FMICW technology to solve the isolation problem between transmission and reception, greatly improving the isolation of the radar receiver system, and the dynamic range of the receiver can also be controlled within a reasonable range, so that the transmitter and receiver are co-located The backscatter radar system of the station can work normally and stably, and the detailed technical scheme is as follows.

步骤1所述雷达主板系统根据发射门控脉冲控制发射控制开关，结合第一本振模块产生第一本振混频线性调频中断连续波信号为：The radar mainboard system described in step 1 controls the launch control switch according to the launch gating pulse, combined with the first local oscillator module to generate the first local oscillator mixing frequency chirp interrupt continuous wave signal:

通过雷达主板系统输入第一本振信号，频率为810M±15MHz，功率为-24dBm，所述雷达主板系统输出高电平至所述的第一本振开关，所述第一本振开关再高电平时导通，将第一本振信号输出至所述发射端本振带通滤波器；The first local oscillator signal is input through the radar main board system, the frequency is 810M±15MHz, and the power is -24dBm. The radar main board system outputs a high level to the first local oscillator switch, and the first local oscillator switch is higher. Turning on at the level, outputting the first local oscillator signal to the transmitter local oscillator bandpass filter;

步骤2所述通过本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器产生第一路等功率功分本振源信号、第二路等功率功分本振源信号为：As described in step 2, generate the first equal-power power division local oscillator signal and the second equal-power power The sub-local oscillator signal is:

所述的本振源锁相环可产生4770～5065MHz频率可调信号，所述雷达主板系统输出锁相环信号幅度、锁相环信号频率至所述的本振源锁相环；其所述的本振源锁相环根据锁相环信号幅度、锁相环信号频输出本振源信号，其频率为5065MHz，功率为0dBm的定频信号；所述的等功率功分器1分2可分别输出等频率，等功率的本振源信号，经过实际测试隔离度大于等于20dB。The local oscillator source phase-locked loop can generate 4770-5065MHz frequency adjustable signal, and the radar motherboard system outputs the phase-locked loop signal amplitude and phase-locked loop signal frequency to the described local oscillator source phase-locked loop; The local oscillator source phase-locked loop outputs the local oscillator source signal according to the phase-locked loop signal amplitude and the phase-locked loop signal frequency, and its frequency is 5065MHz, and the power is a fixed-frequency signal of 0dBm; Output the local oscillator source signals of equal frequency and equal power respectively, and the isolation degree is greater than or equal to 20dB after actual testing.

步骤3所述通过收发天线、射频接收模块将回波信号经过处理得到带通滤波后射频回波信号为：In step 3, the echo signal is processed by the transceiver antenna and the radio frequency receiving module to obtain the bandpass filtered radio frequency echo signal as follows:

带通滤波后射频回波信号与所述接收控制开关输出的第二路等功率功分本振源信号通过所述接收端射频混频器进行混频得到第一次混频后中频回波信号并输出至所述接收端中频带通滤波器；第一次混频后中频回波信号也为线性调频中断连续波信号；The RF echo signal after band-pass filtering is mixed with the second equal-power-divided local oscillator signal output by the receiving control switch through the RF mixer at the receiving end to obtain an intermediate frequency echo signal after the first mixing And output to the intermediate frequency bandpass filter of the receiving end; the intermediate frequency echo signal after the first mixing is also a chirp interrupted continuous wave signal;

通过雷达主板系统输入第二本振信号，频率为941M±15MHz，功率为-33dBm；Input the second local oscillator signal through the radar main board system, the frequency is 941M±15MHz, and the power is -33dBm;

图1为本发明实施例提供的一种基于线性调频中断连续波的C波段收发组件系统结构简图。如图1所示，本发明所述的一种基于线性调频中断连续波的C波段收发组件系统，其特征在于，包括：发射控制开关、第一本振模块、射频发射模块、收发天线、本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、接收控制开关、射频接收模块、第二本振模块、中频输出模块；所述发射控制开关与所述第一本振模块连接；所述第一本振模块与所述射频发射模块连接；所述射频发射模块与所述收发天线连接；所述的本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、发射控制开关、接收控制开关依次连接；所述的射频接收模块、中频输出模块、第二本振模块依次连接；所述收发天线与所述射频接收模块连接；所述接收控制开关与所述的射频接收模块连接。FIG. 1 is a schematic structural diagram of a C-band transceiver component system based on chirp interrupted continuous wave provided by an embodiment of the present invention. As shown in Figure 1, a C-band transceiver component system based on chirp interrupted continuous wave according to the present invention is characterized in that it includes: a transmission control switch, a first local oscillator module, a radio frequency transmission module, a transceiver antenna, a local Vibration source phase-locked loop, local oscillator source radio frequency amplifier, local oscillator source bandpass filter, equal power power splitter, receiving control switch, radio frequency receiving module, second local oscillator module, intermediate frequency output module; the transmission control switch and The first local oscillator module is connected; the first local oscillator module is connected to the radio frequency transmitting module; the radio frequency transmitting module is connected to the transceiver antenna; the local oscillator source phase-locked loop, the local oscillator source radio frequency Amplifier, local oscillator source bandpass filter, equal power power splitter, transmitting control switch, receiving control switch are connected sequentially; described radio frequency receiving module, intermediate frequency output module, second local oscillator module are connected sequentially; described transceiver antenna and The radio frequency receiving module is connected; the receiving control switch is connected with the radio frequency receiving module.

图2为本发明实施例中的第一本振模块简图。如图2所示，本发明所述的第一本振模块包括：雷达主板系统、第一本振开关、发射端本振带通滤波器、发射端本振射频放大器、发射端本振低通滤波器、发射端本振混频器；所述的雷达主板系统、第一本振开关、发射端本振带通滤波器、发射端本振射频放大器、发射端本振低通滤波器、发射端本振混频器依次连接；所述发射端本振混频器与所述发射控制开关连接；Fig. 2 is a schematic diagram of the first local oscillator module in the embodiment of the present invention. As shown in Figure 2, the first local oscillator module of the present invention includes: a radar main board system, a first local oscillator switch, a transmitter local oscillator bandpass filter, a transmitter local oscillator radio frequency amplifier, a transmitter local oscillator low pass filter, local oscillator mixer at the transmitting end; the radar motherboard system, the first local oscillator switch, the local oscillator bandpass filter at the transmitting end, the local oscillator radio frequency amplifier at the transmitting end, the local oscillator low-pass filter at the transmitting end, the transmitting The local oscillator mixers at the transmitting end are connected in sequence; the local oscillator mixer at the transmitting end is connected with the transmitting control switch;

图3为本发明实施例中的射频发射模块图。如图3所示，本发明所述的射频发射模块包括：发射端射频带通滤波器、发射端射频放大器、发射端射频低通滤波器；所述的发射端射频带通滤波器、发射端射频放大器、发射端射频低通滤波器依次连接；所述发射端本振混频器与所述发射端射频带通滤波器连接；Fig. 3 is a diagram of a radio frequency transmitting module in an embodiment of the present invention. As shown in Figure 3, the radio frequency transmitting module of the present invention comprises: the radio frequency bandpass filter of the transmitting end, the radio frequency amplifier of the transmitting end, the radio frequency low pass filter of the transmitting end; The radio frequency amplifier and the radio frequency low-pass filter of the transmitting end are connected in sequence; the local oscillator mixer of the transmitting end is connected with the radio frequency bandpass filter of the transmitting end;

图4为本发明实施例中的本振源模块图。如图4所示，本发明所述的本振源模块包括本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、发射控制开关、接收控制开关；所述本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、发射控制开关、接收控制开关依次连接。Fig. 4 is a block diagram of a local oscillator source in an embodiment of the present invention. As shown in Figure 4, the local oscillator module of the present invention includes a local oscillator phase-locked loop, a local oscillator radio frequency amplifier, a local oscillator bandpass filter, an equal power divider, a transmission control switch, and a reception control switch ; The phase-locked loop of the local oscillator, the radio frequency amplifier of the local oscillator, the band-pass filter of the local oscillator, the power divider of equal power, the transmission control switch, and the reception control switch are connected in sequence.

图5为本发明实施例中的射频接收模块图。如图5所示，本发明所述的射频接收模块包括：接收端限幅器、接收端射频放大器、接收端带通滤波器、接收端射频混频器；所述的接收端限幅器、接收端射频放大器、接收端带通滤波器、接收端射频混频器依次相连；所述接收端射频混频器与所述接收控制开关连接；Fig. 5 is a diagram of a radio frequency receiving module in an embodiment of the present invention. As shown in Figure 5, the radio frequency receiving module of the present invention comprises: receiving end limiter, receiving end radio frequency amplifier, receiving end bandpass filter, receiving end radio frequency mixer; Described receiving end limiter, The receiving end radio frequency amplifier, the receiving end bandpass filter, and the receiving end radio frequency mixer are sequentially connected; the receiving end radio frequency mixer is connected to the receiving control switch;

图6为本发明实施例中的中频输出模块图。如图6所示，本发明所述的中频输出模块包括：接收端中频带通滤波器、接收端中频射频放大器、接收端中频混频器、接收端中频声表滤波器、接收端中频低噪声放大器；所述的接收端中频带通滤波器、接收端中频射频放大器、接收端中频混频器、接收端中频声表滤波器、接收端中频低噪声放大器依次相连；所述接收端射频混频器与所述接收端中频低噪声放大器连接；FIG. 6 is a diagram of an intermediate frequency output module in an embodiment of the present invention. As shown in Figure 6, the intermediate frequency output module of the present invention includes: receiving end intermediate frequency bandpass filter, receiving end intermediate frequency radio frequency amplifier, receiving end intermediate frequency mixer, receiving end intermediate frequency SAW filter, receiving end intermediate frequency low noise Amplifier; the receiving end intermediate frequency bandpass filter, receiving end intermediate frequency radio frequency amplifier, receiving end intermediate frequency mixer, receiving end intermediate frequency SAW filter, receiving end intermediate frequency low noise amplifier are connected in sequence; the receiving end radio frequency mixing The device is connected with the intermediate frequency low noise amplifier of the receiving end;

图7为本发明实施例中的第二本振模块图。如图7所示，本发明所述的第二本振模块包括：接收端本振带通滤波器、接收端本振射频放大器、接收端本振低通滤波器；所述的接收端本振带通滤波器、接收端本振射频放大器、接收端本振低通滤波器依次相连；所述接收端中频混频器与所述接收端本振低通滤波器连接。Fig. 7 is a diagram of the second local oscillator module in the embodiment of the present invention. As shown in Figure 7, the second local oscillator module of the present invention includes: a receiving end local oscillator bandpass filter, a receiving end local oscillator radio frequency amplifier, a receiving end local oscillator low pass filter; the receiving end local oscillator The band-pass filter, the local oscillator radio frequency amplifier at the receiving end, and the local oscillator low-pass filter at the receiving end are connected in sequence; the intermediate frequency mixer at the receiving end is connected with the local oscillator low-pass filter at the receiving end.

本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims

Translated fromChinese

1.一种基于线性调频中断连续波的C波段收发组件系统，其特征在于，包括：1. A C-band transceiver component system based on chirp interrupted continuous wave, characterized in that, comprising:

发射控制开关、第一本振模块、射频发射模块、收发天线、本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器、接收控制开关、射频接收模块、第二本振模块、中频输出模块；Transmitting control switch, first local oscillator module, RF transmitting module, transceiver antenna, local oscillator phase-locked loop, local oscillator RF amplifier, local oscillator bandpass filter, equal power divider, receiving control switch, radio frequency receiving module, the second local oscillator module, and the intermediate frequency output module;

所述发射控制开关与所述第一本振模块连接；所述第一本振模块与所述射频发射模块连接；所述射频发射模块与所述收发天线连接；所述的本振源锁相环、本振源射频放大器、本振源带通滤波器、等功率功分器依次连接；所述等功率功分器分别与所述的发射控制开关、接收控制开关连接；所述的射频接收模块、中频输出模块、第二本振模块依次连接；所述收发天线与所述射频接收模块连接；所述接收控制开关与所述的射频接收模块连接；The transmitting control switch is connected to the first local oscillator module; the first local oscillator module is connected to the radio frequency transmitting module; the radio frequency transmitting module is connected to the transceiver antenna; the local oscillator source is phase-locked The ring, the local oscillator source radio frequency amplifier, the local oscillator source bandpass filter, and the equal-power power divider are connected in sequence; the equal-power power divider is respectively connected with the transmission control switch and the reception control switch; the radio frequency reception The module, the intermediate frequency output module, and the second local oscillator module are connected in sequence; the transceiver antenna is connected to the radio frequency receiving module; the receiving control switch is connected to the radio frequency receiving module;

2.一种利用权利要求1所述的基于线性调频中断连续波的C波段收发组件系统进行基于线性调频中断连续波的C波段收发组件方法，其特征在于，包括以下步骤：2. A C-band transceiver component system based on chirp interrupted continuous wave according to claim 1 is used to carry out the C-band transceiver component method based on chirp interrupted continuous wave, it is characterized in that, comprising the following steps:

步骤3：通过收发天线、射频接收模块将回波信号经过处理得到带通滤波后射频回波信号，雷达主板系统通过接收门控脉冲控制接收控制开关，通过第一次混频处理得到第一次混频后中频回波信号；通过第二本振模块得到低通滤波后第二本振信号；通过中频输出模块将第一次混频后中频回波信号进行第二次混频处理得到第二次混频后中频回波信号，通过进一步处理得到放大后中频回波信号。Step 3: Process the echo signal through the transceiver antenna and RF receiving module to obtain the band-pass filtered RF echo signal. The radar main board system controls the receiving control switch by receiving the gating pulse, and obtains the first time through the first mixing process. The intermediate frequency echo signal after frequency mixing; the second local oscillator signal after low-pass filtering is obtained through the second local oscillator module; the intermediate frequency echo signal after the first mixing is processed through the intermediate frequency output module for the second time to obtain the second The intermediate frequency echo signal after secondary mixing is further processed to obtain an amplified intermediate frequency echo signal.

3.根据权利要求2所述的基于线性调频中断连续波的C波段收发组件方法，其特征在于：3. the C-band transceiver assembly method based on chirp interruption continuous wave according to claim 2, is characterized in that:

步骤1所述雷达主板系统根据发射门控脉冲控制发射控制开关，结合第一本振模块产生第一本振混频信号为：The radar main board system described in step 1 controls the launch control switch according to the launch gating pulse, and combines the first local oscillator module to generate the first local oscillator mixing signal as follows:

所述雷达主板系统输出低电平至所述的第一本振开关，所述的第一本振开关在低电平时断开。The radar motherboard system outputs a low level to the first local oscillation switch, and the first local oscillation switch is turned off when the level is low.

4.根据权利要求2所述的基于线性调频中断连续波的C波段收发组件方法，其特征在于：4. the C-band transceiver assembly method based on chirp interruption continuous wave according to claim 2, is characterized in that:

步骤2所述将第一路等功率功分本振源信号输出至所述发射端本振混频器为：In step 2, the output of the first road equal-power power-divided local oscillator source signal to the transmitter local oscillator mixer is:

5.根据权利要求2所述的基于线性调频中断连续波的C波段收发组件方法，其特征在于：5. the C-band transceiver assembly method based on chirp interruption continuous wave according to claim 2, is characterized in that: