CN115208496A - Rapid automatic calibration method of channel simulator - Google Patents

Abstract

The invention provides a rapid automatic calibration method of a channel simulator, which can complete the measurement of three parameters of all channels by one-time measurement based on an input signal mode of waveform editing, saves calibration time, integrates a test function, improves calibration accuracy, and enables the three parameters of channel fading, time delay and speed to finally trace to national standards. The invention adopts the waveform editing mode to generate the input signal of the wireless channel simulator, reduces the acquisition times, saves the test time, adopts the mode that different channels in the wireless channel simulator simulate different Doppler frequency shift delay fading values, can simultaneously obtain the measured values of the measuring points of all the channels by one-time measurement, also can reduce the acquisition times and greatly improves the calibration efficiency.

Description

Translated fromChinese

一种信道模拟器的快速自动校准方法A Fast and Automatic Calibration Method of Channel Simulator

技术领域technical field

本发明涉及仪器计量技术领域，特别涉及一种自动校准方法，可用于无线信道模拟器衰落、延时、速度参数的校准测试。The invention relates to the technical field of instrument measurement, in particular to an automatic calibration method, which can be used for calibration testing of fading, delay and speed parameters of a wireless channel simulator.

背景技术Background technique

在无线信道模拟器校准过程中必须对衰落、延时、速度参数进行校准，以无线信道模拟器的性能指标，保证其模拟的准确度。During the calibration of the wireless channel simulator, the parameters of fading, delay and speed must be calibrated to ensure the accuracy of the simulation based on the performance indicators of the wireless channel simulator.

目前在无线信道模拟器校准过程，模拟信道的数量多，且需要对不同信道的三个参数在不同数据点进行校准，测量点多，校准过程复杂，因此校准速度慢，效率低，需要提高校准效率，减少工作量。At present, in the calibration process of the wireless channel simulator, the number of analog channels is large, and the three parameters of different channels need to be calibrated at different data points. There are many measurement points and the calibration process is complicated. Therefore, the calibration speed is slow and the efficiency is low. It is necessary to improve the calibration. efficiency and reduce workload.

发明内容SUMMARY OF THE INVENTION

为了克服现有技术的不足，本发明提供一种信道模拟器的快速自动校准方法。本发明的目的在于针对上述现有技术的不足，提供了一种模拟信道快速校准方法，该系统基于波形编辑的输入信号模式，一次测量可以完成全部信道的三个参数测量，节省了校准时间，集成了测试功能，并提高了校准准确度，使信道衰落、延时、速度三个参数能够最终溯源至国家标准。In order to overcome the deficiencies of the prior art, the present invention provides a fast automatic calibration method for a channel simulator. The purpose of the present invention is to provide a fast calibration method for analog channels in view of the above-mentioned deficiencies of the prior art. The system is based on the input signal mode of waveform editing. One measurement can complete three parameter measurements of all channels, which saves calibration time. The test function is integrated, and the calibration accuracy is improved, so that the three parameters of channel fading, delay and speed can be finally traced to the national standard.

本发明解决其技术问题所采用的技术方案是：The technical scheme adopted by the present invention to solve its technical problems is:

第一步骤：按照图1连接设备，矢量信号发生器为矢量信号分析仪输出参考信号和触发信号，矢量信号发生器依次通过射频电缆3和射频电缆4连接至矢量信号分析仪；矢量信号发生器发射连续波信号，测量经过射频电缆3，射频电缆4的电平值P1和信号频率F1；Step 1: Connect the equipment according to Figure 1. The vector signal generator outputs the reference signal and trigger signal for the vector signal analyzer. The vector signal generator is connected to the vector signal analyzer through the RF cable 3 and the RF cable 4 in turn; the vector signal generator Transmit the continuous wave signal, measure the level value P1 and the signal frequency F1 of the radio frequency cable 3 and the radio frequency cable 4;

第二步骤：使用矢量信号发生器发射脉冲调制信号，测量经过射频电缆3和射频电缆4的通路相对于触发信号的延时T1；The second step: use the vector signal generator to transmit the pulse modulation signal, and measure the delay T1 of the path passing through the radio frequency cable 3 and the radio frequency cable 4 relative to the trigger signal;

第四步骤：按照图2连接设备，矢量信号发生器为矢量信号分析仪输出参考信号和触发信号，矢量信号发生器通过射频电缆3连接至无线信道模拟器，无线信道模拟器通过射频电缆4连接至矢量信号分析仪，此时矢量信号发生器、矢量信号分析仪分别与无线信道模拟器的输入和输出端口相通；Step 4: Connect the equipment according to Figure 2, the vector signal generator outputs reference signals and trigger signals for the vector signal analyzer, the vector signal generator is connected to the wireless channel simulator through the RF cable 3, and the wireless channel simulator is connected through the RF cable 4 to the vector signal analyzer, at this time the vector signal generator and the vector signal analyzer are connected to the input and output ports of the wireless channel simulator respectively;

第五步骤：编辑波形加载入矢量信号发生器，脉冲波形为双脉冲调制信号，第一个短时脉冲宽度为50ns，第二个长时脉冲宽度为1ms，第一个脉冲的下降沿与后续长时间脉冲的间隔时间大于需要测量的最大延时值；使用矢量信号发生器发射信号；Step 5: The edited waveform is loaded into the vector signal generator. The pulse waveform is a double-pulse modulation signal. The width of the first short-term pulse is 50ns, the width of the second long-term pulse is 1ms, and the falling edge of the first pulse is the same as the subsequent pulse. The interval of long-time pulses is greater than the maximum delay value to be measured; use a vector signal generator to transmit signals;

第六步骤：设定无线信道模拟器的信道参数值，将信道的中心频率设定为矢量信号发生器的发射频率值，并按照所需校准点设定各多径的衰落、延时和速度值，其中每条多径的延时时间和速度设定为不同的值，每条多径之间的延时差值大于短时脉冲宽度；Step 6: Set the channel parameter value of the wireless channel simulator, set the center frequency of the channel as the transmission frequency value of the vector signal generator, and set the fading, delay and speed of each multipath according to the required calibration point value, in which the delay time and speed of each multipath are set to different values, and the delay difference between each multipath is greater than the short-time pulse width;

第七步骤：使用矢量信号分析仪采集经过无线信道模拟器的信号，检测接收得到的短时脉冲个数，所得到的短时脉冲个数即为多径数量；The seventh step: use the vector signal analyzer to collect the signal passing through the wireless channel simulator, detect the number of short-time pulses received, and the obtained number of short-time pulses is the number of multipaths;

第八步骤：对每个短时脉冲进行频率测量，得到频率粗测值，根据频率粗测值进行数字信道化处理，滤除其他多径的信号，分离出每条径的信号；The eighth step: perform frequency measurement on each short-time pulse to obtain a rough frequency measurement value, perform digital channelization processing according to the frequency rough measurement value, filter out signals of other multipaths, and separate the signals of each path;

第九步骤：调用不同信道已经分离得出的信号，测量短时脉冲相对于触发的延时值T2，利用后置长时脉冲进行FFT变换测量频率F2及电平值P2；The ninth step: call the separated signals of different channels, measure the delay value T2 of the short-time pulse relative to the trigger, and use the post-position long-time pulse to perform FFT transformation to measure the frequency F2 and the level value P2;

第十步骤：计算信道模拟器的每条多径的延迟时间T＝T2-T1；The tenth step: calculate the delay time T=T2-T1 of each multipath of the channel simulator;

第十一步骤：计算信道模拟器的每条多径的多普勒频移F＝F2-F1，换算为速度V＝(F×C)/F1；The eleventh step: calculate the Doppler frequency shift F=F2-F1 of each multipath of the channel simulator, and convert it to the speed V=(F×C)/F1;

第十二步骤：计算信道模拟器的每条多径的衰落P＝P2-P1。The twelfth step: Calculate the fading P=P2-P1 of each multipath of the channel simulator.

所述的矢量信号发生器发射无线信道模拟器所需的输入信号，发射波形为：第一个短时脉冲的脉宽小于被测不同延时点差值的最小值，保证经过信道模拟器后的短时脉冲在时域上不会有重叠；第二个长时间脉冲宽度长于矢量信号分析仪的FFT变换所需时长，此时可将其看成一个连续波信号；第一个短时脉冲的下降沿与后续长时间脉冲的间隔时间大于需要测量的最大延时值，保证进过信道模拟器的信号短时脉冲和长时脉冲不会再时间上有重叠。The vector signal generator transmits the input signal required by the wireless channel simulator, and the transmission waveform is: the pulse width of the first short-time pulse is less than the minimum value of the difference between the measured different delay points, ensuring that after passing through the channel simulator The short-time pulses will not overlap in the time domain; the width of the second long-time pulse is longer than the time required for the FFT transformation of the vector signal analyzer, and it can be regarded as a continuous wave signal at this time; the first short-time pulse The interval between the falling edge of the signal and the subsequent long-term pulse is greater than the maximum delay value to be measured, to ensure that the short-term pulse and long-term pulse of the signal entering the channel simulator will not overlap in time.

所述矢量信号分析仪的分析带宽设置应覆盖无线信道模拟器的模拟的速度对应的多普勒频移范围，同时采集的时间长于矢量信号发生器所编辑的一个波形周期+延时时间长度。The analysis bandwidth setting of the vector signal analyzer should cover the Doppler frequency shift range corresponding to the simulated speed of the wireless channel simulator, and the acquisition time is longer than one waveform cycle + delay time length edited by the vector signal generator.

本发明的有益效果在于采用波形编辑的方式产生无线信道模拟器的输入信号，使得在一次信号采集后同时信号处理得出延时和频率电平改变值，从而计算无线信道模拟器的延时衰落和多普勒频移值，减少了采集次数，节约了测试时间。The beneficial effect of the invention lies in that the input signal of the wireless channel simulator is generated by means of waveform editing, so that the delay and frequency level change values can be obtained by signal processing after one signal acquisition, so as to calculate the delay fading of the wireless channel simulator. and Doppler frequency shift value, reducing the number of acquisitions and saving test time.

本发明采用在无线信道模拟器中的不同信道模拟不同多普勒频移延时衰落值的方式，并利用多普勒频移的不同，无线信道模拟器输出的信号频率不同，进行数字信道化，将不同多径的信号进行数字化分离，可以一次测量同时得到全部信道的测量点的测量值，也能减少采集次数，大大提高了校准效率。The invention adopts the method of simulating different Doppler frequency shift delay fading values in different channels in the wireless channel simulator, and uses the different Doppler frequency shifts to output different signal frequencies of the wireless channel simulator to carry out digital channelization , digitally separate signals of different multipaths, and can obtain the measurement values of all channels at the same time by one measurement, and can also reduce the number of acquisitions and greatly improve the calibration efficiency.

附图说明Description of drawings

图1为本发明的系统测试的修正连接图。FIG. 1 is a modified connection diagram of the system test of the present invention.

图2为本发明的统测试的测量连接图。FIG. 2 is a measurement connection diagram of the system test of the present invention.

图3为矢量信号发生器编辑的波形信号。Figure 3 is the waveform signal edited by the vector signal generator.

具体实施方式Detailed ways

下面结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

本发明的目的在于针对上述现有技术的不足，提供了一种模拟信道快速校准方法，该系统基于波形编辑的输入信号模式，一次测量可以完成全部信道的三个参数测量，节省了校准时间，集成了测试功能，并提高了校准准确度，使信道衰落、延时、速度三个参数能够最终溯源至国家标准。The purpose of the present invention is to provide a fast calibration method for analog channels in view of the above-mentioned deficiencies of the prior art. The system is based on the input signal mode of waveform editing. One measurement can complete three parameter measurements of all channels, which saves calibration time. The test function is integrated, and the calibration accuracy is improved, so that the three parameters of channel fading, delay and speed can be finally traced to the national standard.

为了实现上述目的，本发明包括：系统由矢量信号发生器，矢量信号分析仪，射频电缆3和射频电缆4。In order to achieve the above object, the present invention includes: the system consists of a vector signal generator, a vector signal analyzer, a radio frequency cable 3 and a radio frequency cable 4 .

本发明采用利用触发信号，进行无线信道模拟器校准，其解决问题所采用的技术方案包括以下步骤：The present invention adopts and utilizes the trigger signal to carry out the calibration of the wireless channel simulator, and the technical scheme adopted for solving the problem comprises the following steps:

第一步骤：按照图1连接设备。使用矢量信号发生器发射连续波信号，测量进过射频电缆3，射频电缆4的电平值P1和信号频率F1。Step 1: Connect the device as shown in Figure 1. Use a vector signal generator to transmit a continuous wave signal, and measure the level value P1 and signal frequency F1 of the radio frequency cable 3 and radio frequency cable 4.

第二步骤：使用矢量信号发生器发射脉冲调制信号，测量进过射频电缆3，射频电缆4的通路相对于触发信号的延时T1。The second step: use the vector signal generator to transmit the pulse modulation signal, and measure the delay T1 of the path through the radio frequency cable 3 and the radio frequency cable 4 relative to the trigger signal.

第四步骤：按照图2连接设备，此时矢量信号发生器、矢量信号分析仪分别于无线信道模拟器的输入和输出端口相通。The fourth step: connect the equipment according to Fig. 2, at this time, the vector signal generator and the vector signal analyzer are connected to the input and output ports of the wireless channel simulator respectively.

第五步骤：编辑波形加载入矢量信号发生器，脉冲波形为双脉冲调制信号，第一个短时脉冲宽度为50ns，第二个长时脉冲宽度为1ms，第一个脉冲的下降沿与后续长时间脉冲的间隔时间应大于需要测量的最大延时值。使用矢量信号发生器发射信号。Step 5: The edited waveform is loaded into the vector signal generator. The pulse waveform is a double-pulse modulation signal. The width of the first short-term pulse is 50ns, the width of the second long-term pulse is 1ms, and the falling edge of the first pulse is the same as the subsequent pulse. The interval between long pulses should be greater than the maximum delay value to be measured. Use a vector signal generator to transmit the signal.

第六步骤：设定无线信道模拟器的信道参数值，将信道的中心频率设定为矢量信号发生器的发射频率值，并按照所需校准点设定各多径的衰落、延时、速度值，其中每条多径的延时时间和速度设定为不同的值，每条多径之间的延时差值应大于短时脉冲宽度。Step 6: Set the channel parameter value of the wireless channel simulator, set the center frequency of the channel as the transmission frequency value of the vector signal generator, and set the fading, delay and speed of each multipath according to the required calibration point The delay time and speed of each multipath are set to different values, and the delay difference between each multipath should be greater than the short-time pulse width.

第七步骤：使用矢量信号分析仪采集经过无线信道模拟器的信号，检测接收得到的短时脉冲个数，所得到的短时脉冲个数即为多径数量。The seventh step: use a vector signal analyzer to collect the signal passing through the wireless channel simulator, and detect the number of short-time pulses received, and the obtained short-time pulse number is the number of multipaths.

第八步骤：对每个短时脉冲进行频率测量，得到频率粗测值。根据频率粗测值进行数字信道化处理，滤除其他多径的信号，分离出每条径的信号。The eighth step: measure the frequency of each short-time pulse to obtain a rough measured value of the frequency. Perform digital channelization processing according to the rough frequency measurement value, filter out the signals of other multipaths, and separate the signals of each path.

第九步骤：调用不同信道已经分离得出的信号，测量短时脉冲相对于触发的延时值T2，利用后置长时脉冲进行FFT变换测量频率F2及电平值P2。The ninth step: call the separated signals of different channels, measure the delay value T2 of the short-time pulse relative to the trigger, and use the post-position long-time pulse to perform FFT transformation to measure the frequency F2 and the level value P2.

第十步骤：计算信道模拟器的每条多径的延迟时间T＝T2-T1。The tenth step: calculate the delay time T=T2-T1 of each multipath of the channel simulator.

第十一步骤：计算信道模拟器的每条多径的多普勒频移F＝F2-F1，换算为速度V＝(F×C)/F1。The eleventh step: Calculate the Doppler frequency shift F=F2-F1 of each multipath of the channel simulator, and convert it into velocity V=(F×C)/F1.

第十二步骤：计算信道模拟器的每条多径的衰落P＝P2-P1。The twelfth step: Calculate the fading P=P2-P1 of each multipath of the channel simulator.

所述的矢量信号发生器负责发射无线信道模拟器所需的输入信号，发射波形为图3所示，第一个短时脉冲的脉宽应小于被测不同延时点差值的最小值以保证经过信道模拟器后的短时脉冲在时域上不会有重叠；第二个长时间脉冲宽度应长于矢量信号分析仪的FFT变换所需时长，此时可将其看成一个连续波信号；第一个短时脉冲的下降沿与后续长时间脉冲的间隔时间应大于需要测量的最大延时值以保证进过信道模拟器的信号短时脉冲和长时脉冲不会再时间上有重叠。The vector signal generator is responsible for transmitting the input signal required by the wireless channel simulator. The transmitting waveform is shown in Figure 3. The pulse width of the first short-time pulse should be less than the minimum value of the difference between the different delay points to be measured. Ensure that the short-time pulse after passing through the channel simulator will not overlap in the time domain; the width of the second long-time pulse should be longer than the time required for the FFT transformation of the vector signal analyzer, at this time it can be regarded as a continuous wave signal ;The interval between the falling edge of the first short-time pulse and the subsequent long-time pulse should be greater than the maximum delay value that needs to be measured to ensure that the short-time pulse and long-time pulse of the signal passing through the channel simulator will not overlap in time. .

所述矢量信号分析仪的分析带宽设置应覆盖无线信道模拟器的模拟的速度对应的多普勒频移范围，同时采集的时间应长于矢量信号发生器所编辑的一个波形周期+延时时间长度。The analysis bandwidth setting of the vector signal analyzer should cover the Doppler frequency shift range corresponding to the simulated speed of the wireless channel simulator, and the acquisition time should be longer than one waveform period + delay time length edited by the vector signal generator. .

图1为为本发明的系统测试的修正连接图，用以测量未经过无线信道模拟器的原校准用信号的频率电平和相对于触发信号的延时。FIG. 1 is a modified connection diagram of the system test of the present invention, which is used to measure the frequency level of the original calibration signal and the delay relative to the trigger signal without going through the wireless channel simulator.

图2为本发明的统测试的测量连接图，用以测量校准用信号经过信道后变换的频率电平和相对于触发信号的延时。FIG. 2 is a measurement connection diagram of the system test of the present invention, which is used to measure the frequency level and the delay relative to the trigger signal after the signal for calibration passes through the channel.

图3为矢量信号发生器编辑的波形信号，由一个短时脉冲和一个长时脉冲组成，第一个短时脉冲的脉宽t1小于被测不同延时点差值的最小值；第二个长时间脉冲宽度t3长于矢量信号分析仪的FFT变换所需时长；第一个短时脉冲的下降沿与后续长时间脉冲的间隔时间t2大于需要测量的最大延时值。Figure 3 shows the waveform signal edited by the vector signal generator, which consists of a short-time pulse and a long-time pulse. The pulse width t1 of the first short-time pulse is less than the minimum value of the difference between the measured delay points; the second pulse The long-time pulse width t3 is longer than the time required for the FFT transformation of the vector signal analyzer; the interval t2 between the falling edge of the first short-time pulse and the subsequent long-time pulse is greater than the maximum delay value to be measured.

以上描述仅是本发明的一个具体实例，显然对于本领域的专业人员来说，在了解了本发明内容和原理后，都可在不背离本发明原理的情况下，进行形式上和细节上的各种修正和改变，但是这些基于本发明思想的修正和改变仍在本发明的权利要求保护范围之内。The above description is only a specific example of the present invention. Obviously, for those skilled in the art, after understanding the content and principle of the present invention, they can carry out formal and detailed modifications without departing from the principle of the present invention. Various corrections and changes, but these corrections and changes based on the idea of the present invention are still within the scope of protection of the claims of the present invention.

Claims (3)

Translated fromChinese

1.一种信道模拟器的快速自动校准方法，其特征在于包括下述步骤：1. a fast automatic calibration method of a channel simulator, is characterized in that comprising the following steps:第一步骤：矢量信号发生器为矢量信号分析仪输出参考信号和触发信号，矢量信号发生器依次通过射频电缆3和射频电缆4连接至矢量信号分析仪；矢量信号发生器发射连续波信号，测量经过射频电缆3，射频电缆4的电平值P1和信号频率F1；The first step: the vector signal generator outputs reference signals and trigger signals for the vector signal analyzer, and the vector signal generator is connected to the vector signal analyzer through the RF cable 3 and the RF cable 4 in turn; the vector signal generator transmits a continuous wave signal, and measures After the radio frequency cable 3, the level value P1 and the signal frequency F1 of the radio frequency cable 4;第二步骤：使用矢量信号发生器发射脉冲调制信号，测量经过射频电缆3和射频电缆4的通路相对于触发信号的延时T1；The second step: use the vector signal generator to transmit the pulse modulation signal, and measure the delay T1 of the path passing through the radio frequency cable 3 and the radio frequency cable 4 relative to the trigger signal;第四步骤：矢量信号发生器为矢量信号分析仪输出参考信号和触发信号，矢量信号发生器通过射频电缆3连接至无线信道模拟器，无线信道模拟器通过射频电缆4连接至矢量信号分析仪，此时矢量信号发生器、矢量信号分析仪分别与无线信道模拟器的输入和输出端口相通；The fourth step: the vector signal generator outputs a reference signal and a trigger signal for the vector signal analyzer, the vector signal generator is connected to the wireless channel simulator through the radio frequency cable 3, and the wireless channel simulator is connected to the vector signal analyzer through the radio frequency cable 4, At this time, the vector signal generator and the vector signal analyzer communicate with the input and output ports of the wireless channel simulator respectively;第五步骤：编辑波形加载入矢量信号发生器，脉冲波形为双脉冲调制信号，第一个短时脉冲宽度为50ns，第二个长时脉冲宽度为1ms，第一个脉冲的下降沿与后续长时间脉冲的间隔时间大于需要测量的最大延时值；使用矢量信号发生器发射信号；Step 5: The edited waveform is loaded into the vector signal generator. The pulse waveform is a double-pulse modulation signal. The width of the first short-term pulse is 50ns, the width of the second long-term pulse is 1ms, and the falling edge of the first pulse is the same as the subsequent pulse. The interval of long-time pulses is greater than the maximum delay value to be measured; use a vector signal generator to transmit signals;第六步骤：设定无线信道模拟器的信道参数值，将信道的中心频率设定为矢量信号发生器的发射频率值，并按照所需校准点设定各多径的衰落、延时和速度值，其中每条多径的延时时间和速度设定为不同的值，每条多径之间的延时差值大于短时脉冲宽度；Step 6: Set the channel parameter value of the wireless channel simulator, set the center frequency of the channel as the transmission frequency value of the vector signal generator, and set the fading, delay and speed of each multipath according to the required calibration point value, in which the delay time and speed of each multipath are set to different values, and the delay difference between each multipath is greater than the short-time pulse width;第七步骤：使用矢量信号分析仪采集经过无线信道模拟器的信号，检测接收得到的短时脉冲个数，所得到的短时脉冲个数即为多径数量；The seventh step: use the vector signal analyzer to collect the signal passing through the wireless channel simulator, detect the number of short-time pulses received, and the obtained number of short-time pulses is the number of multipaths;第八步骤：对每个短时脉冲进行频率测量，得到频率粗测值，根据频率粗测值进行数字信道化处理，滤除其他多径的信号，分离出每条径的信号；The eighth step: perform frequency measurement on each short-time pulse to obtain a rough frequency measurement value, perform digital channelization processing according to the frequency rough measurement value, filter out signals of other multipaths, and separate the signals of each path;第九步骤：调用不同信道已经分离得出的信号，测量短时脉冲相对于触发的延时值T2，利用后置长时脉冲进行FFT变换测量频率F2及电平值P2；The ninth step: call the separated signals of different channels, measure the delay value T2 of the short-time pulse relative to the trigger, and use the post-position long-time pulse to perform FFT transformation to measure the frequency F2 and the level value P2;第十步骤：计算信道模拟器的每条多径的延迟时间T＝T2-T1；The tenth step: calculate the delay time T=T2-T1 of each multipath of the channel simulator;第十一步骤：计算信道模拟器的每条多径的多普勒频移F＝F2-F1，换算为速度V＝(F×C)/F1；The eleventh step: calculate the Doppler frequency shift F=F2-F1 of each multipath of the channel simulator, and convert it to the speed V=(F×C)/F1;第十二步骤：计算信道模拟器的每条多径的衰落P＝P2-P1。The twelfth step: Calculate the fading P=P2-P1 of each multipath of the channel simulator.2.根据权利要求1所述的信道模拟器的快速自动校准方法，其特征在于：2. the fast automatic calibration method of channel simulator according to claim 1, is characterized in that:所述的矢量信号发生器发射无线信道模拟器所需的输入信号，发射波形为：第一个短时脉冲的脉宽小于被测不同延时点差值的最小值，保证经过信道模拟器后的短时脉冲在时域上不会有重叠；第二个长时间脉冲宽度长于矢量信号分析仪的FFT变换所需时长，此时可将其看成一个连续波信号；第一个短时脉冲的下降沿与后续长时间脉冲的间隔时间大于需要测量的最大延时值，保证进过信道模拟器的信号短时脉冲和长时脉冲不会再时间上有重叠。The vector signal generator transmits the input signal required by the wireless channel simulator, and the transmission waveform is: the pulse width of the first short-time pulse is less than the minimum value of the difference between the measured different delay points, ensuring that after passing through the channel simulator The short-time pulses will not overlap in the time domain; the width of the second long-time pulse is longer than the time required for the FFT transformation of the vector signal analyzer, and it can be regarded as a continuous wave signal at this time; the first short-time pulse The interval between the falling edge of the signal and the subsequent long-term pulse is greater than the maximum delay value to be measured, to ensure that the short-term pulse and long-term pulse of the signal entering the channel simulator will not overlap in time.3.根据权利要求1所述的信道模拟器的快速自动校准方法，其特征在于：3. the fast automatic calibration method of channel simulator according to claim 1, is characterized in that:所述矢量信号分析仪的分析带宽设置应覆盖无线信道模拟器的模拟的速度对应的多普勒频移范围，同时采集的时间长于矢量信号发生器所编辑的一个波形周期+延时时间长度。The analysis bandwidth setting of the vector signal analyzer should cover the Doppler frequency shift range corresponding to the simulated speed of the wireless channel simulator, and the acquisition time is longer than one waveform cycle + delay time length edited by the vector signal generator.

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