技术领域technical field
本发明涉及一种坐标转换方法，尤其是一种导航坐标转换高斯投影坐 标的方法、系统、设备及介质，属于导航数据领域。The invention relates to a coordinate conversion method, in particular to a method, system, device and medium for converting navigation coordinates to Gaussian projection coordinates, and belongs to the field of navigation data.
背景技术Background technique
投影变换对于航天、航空、航海、建筑、军事和地质起着至关重要的 作用，现实生活一刻也离不开投影变换。高斯投影和墨卡托投影是地图投 影理论中两种重要的等角投影，陆图一般采用高斯投影，海图一般采用墨 卡托投影。我国的地图采用高斯投影，在高斯投影下得到的坐标成为高斯 平面直角坐标。高斯投影是一种等角横轴切椭圆柱的投影方法，由德国数 学家高斯拟定，后由德国大地测量家克吕克加以补充。经纬度(L，B)坐 标转换为高斯平面(X，Y)坐标时称之为高斯正投影；反之称为高斯反投 影。导航定位中，一般利用高斯正投影完成坐标系转换。其中L，B是导 航车辆所在位置的经、纬度对应的弧度，X，Y分别表示高斯投影坐标系 的纵坐标和横坐标，与传统平面坐标相反。Projection transformation plays a vital role in aerospace, aviation, navigation, architecture, military and geology, and projection transformation is inseparable from real life. Gaussian projection and Mercator projection are two important isometric projections in map projection theory. Land maps generally use Gaussian projection, and sea maps generally use Mercator projection. The map of our country adopts Gaussian projection, and the coordinates obtained under the Gaussian projection become the rectangular coordinates of the Gaussian plane. Gaussian projection is a projection method of equiangular transverse axis tangent elliptical cylinder, formulated by German mathematician Gauss, and later supplemented by German geodetic surveyor Klück. When the latitude and longitude (L, B) coordinates are converted into Gaussian plane (X, Y) coordinates, it is called Gaussian orthographic projection; otherwise, it is called Gaussian back projection. In navigation and positioning, Gaussian orthographic projection is generally used to complete the coordinate system transformation. Among them, L and B are the radians corresponding to the longitude and latitude of the location of the navigation vehicle, and X and Y respectively represent the ordinate and abscissa of the Gaussian projection coordinate system, which are opposite to the traditional plane coordinates.
GPS(Global Positioning System，全球定位系统)测得的定位数据是 以WGS-84标准世界坐标系得到的，通常在各个地点进行测量时，需要将 基于世界坐标系测得的数据信息转换为用户当地的坐标系，即GPS的实际 应用中必须进行坐标转换。The positioning data measured by GPS (Global Positioning System, global positioning system) is obtained in the WGS-84 standard world coordinate system. Usually, when measuring at various locations, it is necessary to convert the data information measured based on the world coordinate system into the user's local area. The coordinate system, that is, the coordinate transformation must be carried out in the practical application of GPS.
目前，将GPS数据转换成当地坐标系的方法有很多参考的文献，但是 将当地的导航坐标系转换成高斯投影坐标还不存在明确直接的转换关系。 尤其是在GPS数据不足的情况下，需要找到一种方法使用已知条件求解坐 标系内点的经纬度以及海拔，并得到其高斯投影坐标。At present, there are many references for the method of converting GPS data into local coordinate system, but there is no clear and direct conversion relationship for converting the local navigation coordinate system into Gaussian projection coordinates. Especially in the case of insufficient GPS data, it is necessary to find a method to solve the longitude, latitude and altitude of points in the coordinate system using known conditions, and obtain its Gaussian projection coordinates.
发明内容SUMMARY OF THE INVENTION
本发明的第一个目的是提供一种导航坐标转换高斯投影坐标的方法， 该方法可以解决在GPS数据缺失的情况下，对已有的数据进行处理，转换 成高斯投影坐标系下的坐标，从而获得地球上的物理点间在高斯投影地图 上的距离。The first object of the present invention is to provide a method for converting navigation coordinates into Gaussian projection coordinates, which can solve the problem of processing existing data in the absence of GPS data and converting them into coordinates in a Gaussian projection coordinate system, Thereby, the distance between the physical points on the earth on the Gaussian projection map is obtained.
本发明的第二个目的在于提供一种导航坐标转换高斯投影坐标的系 统。The second object of the present invention is to provide a system for converting navigation coordinates into Gaussian projection coordinates.
本发明的第三个目的在于提供一种电子设备。A third object of the present invention is to provide an electronic device.
本发明的第四个目的在于提供一种存储介质。A fourth object of the present invention is to provide a storage medium.
本发明的第一个目的可以通过采取如下技术方案达到：The first purpose of the present invention can be achieved by adopting the following technical solutions:
导航坐标转换高斯投影坐标的方法，所述方法包括：A method for converting a navigation coordinate into a Gaussian projection coordinate, the method comprising:
获取数据；其中，所述数据包括导航坐标系原点的经纬度海拔以及待 转换点在导航坐标系下的坐标；Obtain data; Wherein, described data comprises the latitude and longitude altitude of the origin of the navigation coordinate system and the coordinates of the point to be converted under the navigation coordinate system;
根据导航坐标系原点的经纬度海拔，得到导航坐标系原点的ECEF坐 标；According to the longitude, latitude and altitude of the origin of the navigation coordinate system, the ECEF coordinates of the origin of the navigation coordinate system are obtained;
根据导航坐标系原点的ECEF坐标以及待转换点在导航坐标系下的坐 标，得到待转换点的ECEF坐标；According to the ECEF coordinates of the origin of the navigation coordinate system and the coordinates of the point to be converted under the navigation coordinate system, obtain the ECEF coordinates of the point to be converted;
根据待转换点的ECEF坐标，得到待转换点的大地坐标；其中，所述 大地坐标包括经度、纬度和海拔；According to the ECEF coordinates of the point to be converted, the geodetic coordinates of the point to be converted are obtained; wherein, the geodetic coordinates include longitude, latitude and altitude;
根据待转换点的大地坐标，得到待转换点的高斯投影坐标。According to the geodetic coordinates of the point to be converted, the Gaussian projection coordinates of the point to be converted are obtained.
进一步的，所述导航坐标系原点的ECEF坐标，利用经纬度海拔转换 至ECEF地心坐标系的关系式确定，如下：Further, the ECEF coordinates of the origin of the navigation coordinate system are determined by using the relational expression of the latitude and longitude altitude conversion to the ECEF geocentric coordinate system, as follows:
其中，O'为导航坐标系原点，(xO',yO',zO')为导航坐标系原点O'在ECEF 坐标系下的坐标，为导航坐标系原点O'的经度，λO'导航坐标系原点O'的 纬度，hO'为导航坐标系原点O'的海拔，为地球的横向曲率半径。Among them, O' is the origin of the navigation coordinate system, (xO' , yO' , zO' ) is the coordinate of the origin O' of the navigation coordinate system in the ECEF coordinate system, is the longitude of the origin O' of the navigation coordinate system, λO ' is the latitude of the origin O' of the navigation coordinate system, hO' is the altitude of the origin O' of the navigation coordinate system, is the lateral radius of curvature of the Earth.
进一步的，的计算公式如下：further, The calculation formula is as follows:
其中，a为WGS-84模型中地球的长半径，e为WGS-84模型中地球 的椭圆偏心率。Among them, a is the long radius of the earth in the WGS-84 model, and e is the elliptical eccentricity of the earth in the WGS-84 model.
进一步的，所述待转换点的ECEF坐标，利用ECEF坐标系转换至导 航坐标系的逆转换关系式确定，如下：Further, the ECEF coordinate of the described point to be converted, utilizes the ECEF coordinate system to convert to the inverse conversion relational formula of the navigation coordinate system to determine, as follows:
其中，P为待转换点，(xP,yP,zP)为待转换点P在ECEF坐标系下的坐 标，(xned,yned,zned)为待转换点P在导航坐标系下的坐标，(xO',yO',zO')为导航 坐标系原点O'在ECEF坐标系下的坐标，R-1为ECEF坐标系变换到导航坐 标系的旋转矩阵R的逆矩阵。Among them, P is the point to be converted, (xP , yP , zP ) is the coordinate of the point to be converted P in the ECEF coordinate system, (xned , yned , zned ) is the point to be converted P in the navigation coordinate system (xO' , yO' , zO' ) are the coordinates of the origin O' of the navigation coordinate system in the ECEF coordinate system, and R-1 is the inverse of the rotation matrix R that transforms the ECEF coordinate system to the navigation coordinate system matrix.
进一步的，所述旋转矩阵R由导航坐标系原点O'的经纬度确定，如下：Further, the rotation matrix R is determined by the longitude and latitude of the origin O' of the navigation coordinate system, as follows:
其中，为导航坐标系原点O'的经度，λO'导航坐标系原点O'的纬度。in, is the longitude of the origin O' of the navigation coordinate system, and λO ' is the latitude of the origin O' of the navigation coordinate system.
进一步的，所述待转换点的大地坐标，利用经纬度海拔转换至ECEF 地心坐标系的逆转换关系式确定，如下：Further, the geodetic coordinates of the to-be-converted point are determined by using the inverse conversion relation of longitude, latitude and altitude to convert to the ECEF geocentric coordinate system, as follows:
其中，(xP,yP,zP)为待转换点P在ECEF坐标系下的坐标，为待转换 点P的经度，λ为待转换点P的纬度，h为待转换点P的海拔。Among them, (xP , yP , zP ) are the coordinates of the point P to be converted in the ECEF coordinate system, is the longitude of the point P to be converted, λ is the latitude of the point P to be converted, and h is the altitude of the point P to be converted.
进一步的，所述待转换点的高斯投影坐标，利用大地坐标转换高斯投 影坐标的关系式确定，如下：Further, the Gaussian projection coordinates of the point to be converted are determined by the relational expression of the geodetic coordinates to convert the Gaussian projection coordinates, as follows:
其中，in,
l＝L-L0l=LL0
t＝tan(B)t=tan(B)
其中，B为纬度，L为经度，L0为中央子午线的经度，a为参考椭球的 长半径，b为参考椭球的短半径，A为赤道到纬度为B的子午线弧长。where B is the latitude, L is the longitude, L0 is the longitude of the central meridian, a is the long radius of the reference ellipsoid, b is the short radius of the reference ellipsoid, and A is the arc length from the equator to the meridian at latitude B.
本发明的第二个目的可以通过采取如下技术方案达到：The second object of the present invention can be achieved by adopting the following technical solutions:
导航坐标转换高斯投影坐标的系统，所述系统包括：A system for transforming navigation coordinates into Gaussian projected coordinates, the system comprising:
数据获取模块，用于获取数据；其中，所述数据包括导航坐标系原点 的经纬度海拔以及待转换点在导航坐标系下的坐标；A data acquisition module for acquiring data; wherein, the data includes the latitude and longitude altitude of the origin of the navigation coordinate system and the coordinates of the point to be converted under the navigation coordinate system;
第一ECEF坐标获取模块，用于根据导航坐标系原点的经纬度海拔， 得到导航坐标系原点的ECEF坐标；a first ECEF coordinate acquisition module, configured to obtain the ECEF coordinates of the origin of the navigation coordinate system according to the longitude, latitude and altitude of the origin of the navigation coordinate system;
第二ECEF坐标获取模块，用于根据导航坐标系原点的ECEF坐标以 及待转换点在导航坐标系下的坐标，得到待转换点的ECEF坐标；The second ECEF coordinate acquisition module is used to obtain the ECEF coordinates of the point to be converted according to the ECEF coordinates of the origin of the navigation coordinate system and the coordinates of the point to be converted under the navigation coordinate system;
大地坐标获取模块，用于根据待转换点的ECEF坐标，得到待转换点 的大地坐标；其中，所述大地坐标包括经度、纬度和海拔；The geodetic coordinate acquisition module is used to obtain the geodetic coordinates of the point to be converted according to the ECEF coordinates of the point to be converted; wherein, the geodetic coordinates include longitude, latitude and altitude;
高斯投影坐标获取模块，用于根据待转换点的大地坐标，得到待转换 点的高斯投影坐标。The Gaussian projection coordinate acquisition module is used to obtain the Gaussian projection coordinates of the point to be converted according to the geodetic coordinates of the point to be converted.
本发明的第三个目的可以通过采取如下技术方案达到：The third object of the present invention can be achieved by adopting the following technical solutions:
电子设备，包括处理器以及用于存储处理器可执行程序的存储器，所 述处理器执行存储器存储的程序时，实现上述的导航坐标转换高斯投影坐 标的方法。The electronic device includes a processor and a memory for storing a program executable by the processor. When the processor executes the program stored in the memory, the above-mentioned method for converting a navigation coordinate into a Gaussian projection coordinate is implemented.
本发明的第四个目的可以通过采取如下技术方案达到：The fourth object of the present invention can be achieved by adopting the following technical solutions:
存储介质，存储有程序，所述程序被处理器执行时，实现上述的导航 坐标转换高斯投影坐标的方法。The storage medium stores a program, and when the program is executed by the processor, the above-mentioned method for converting navigation coordinates to Gaussian projection coordinates is implemented.
本发明相对于现有技术具有如下的有益效果：The present invention has the following beneficial effects with respect to the prior art:
本发明先将待转换点的导航坐标转换为ECEF坐标，接着转换为大地 坐标，最后利用大地坐标计算出待转换点的高斯投影坐标，可以解决在GPS 数据缺失的情况下，对已有的导航坐标系原点的经纬度海拔以及待转换点 在导航坐标系下的坐标进行处理，转换成高斯投影坐标系下的坐标，从而 可以获得地球上至少两个物理点间在高斯投影地图上的距离。The present invention first converts the navigation coordinates of the point to be converted into ECEF coordinates, then converts them into geodetic coordinates, and finally uses the geodetic coordinates to calculate the Gaussian projection coordinates of the point to be converted, which can solve the problem of existing navigation systems when GPS data is missing. The longitude, latitude and altitude of the origin of the coordinate system and the coordinates of the point to be converted in the navigation coordinate system are processed and converted into coordinates in the Gaussian projection coordinate system, so that the distance between at least two physical points on the earth on the Gaussian projection map can be obtained.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对 实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地， 下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员 来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获 得其他的附图In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.
图1为本发明实施例1的导航坐标转换高斯投影坐标的方法流程图。FIG. 1 is a flowchart of a method for converting navigation coordinates to Gaussian projection coordinates according to Embodiment 1 of the present invention.
图2为本发明实施例1的两个坐标系以及待转换点示意图。FIG. 2 is a schematic diagram of two coordinate systems and points to be converted according to Embodiment 1 of the present invention.
图3为本发明实施例1的高斯投影坐标示意图。FIG. 3 is a schematic diagram of Gaussian projection coordinates according to Embodiment 1 of the present invention.
图4为本发明实施例2的导航坐标转换高斯投影坐标的系统结构框图。FIG. 4 is a block diagram of a system structure for converting a navigation coordinate into a Gaussian projection coordinate according to Embodiment 2 of the present invention.
图5为本发明实施例3的电子设备结构框图。FIG. 5 is a structural block diagram of an electronic device according to Embodiment 3 of the present invention.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，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，所描述的实施例是本发明的一部分实施例，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作出创造性劳动 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。In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention. .
实施例1：Example 1:
本实施例对所涉及的概念进行如下说明：This embodiment describes the involved concepts as follows:
导航坐标系(North East Down，NED坐标系)又称地理坐标系、北东 地坐标系。其原点在测量物体的中心，N轴在当地水平面指向地理北，E 轴在当地水平面指向东，D轴垂直向下构成右手坐标系。Navigation coordinate system (North East Down, NED coordinate system) is also known as geographic coordinate system, north-east coordinate system. Its origin is at the center of the measurement object, the N-axis points to the geographic north on the local horizontal plane, the E-axis points to the east on the local horizontal plane, and the D-axis is vertically downward to form a right-handed coordinate system.
ECEF坐标系(Earth-Centered,Earth-Fixed地心地固坐标系)原点位于 地球中心，z轴指向协议地球的北极，x轴指向本初子午线与地球赤道的交 点，y轴与x轴、z轴构成右手坐标系。The origin of the ECEF coordinate system (Earth-Centered, Earth-Fixed geo-fixed coordinate system) is located at the center of the earth, the z-axis points to the north pole of the agreement earth, the x-axis points to the intersection of the prime meridian and the earth's equator, the y-axis and the x-axis and the z-axis form a right-handed coordinate system.
大地坐标系是大地测量中以参考椭球面为基准面建立起来的坐标系， 其坐标由经度，纬度和海拔组成。The geodetic coordinate system is a coordinate system established with the reference ellipsoid as the datum in the geodetic survey, and its coordinates are composed of longitude, latitude and altitude.
导航坐标系和ECEF坐标系均为空间三维坐标系，大地坐标系和ECEF 坐标系是此转换方法的中间坐标系，均采用WGS(World Geodetic System， 世界大地坐标系)-84椭球体参数。The navigation coordinate system and the ECEF coordinate system are both spatial three-dimensional coordinate systems, and the geodetic coordinate system and the ECEF coordinate system are the intermediate coordinate systems of this conversion method, and both use WGS (World Geodetic System, World Geodetic System)-84 ellipsoid parameters.
如图1所示，本实施例提供了一种导航坐标转换高斯投影坐标的方法， 该方法包括以下步骤：As shown in FIG. 1 , this embodiment provides a method for converting navigation coordinates into Gaussian projection coordinates, and the method includes the following steps:
S101、获取数据。S101. Acquire data.
本实施例所获取的数据包括导航坐标系原点的经纬度海拔以及待转 换点在导航坐标系下的坐标。The data acquired in this embodiment includes the longitude, latitude and altitude of the origin of the navigation coordinate system and the coordinates of the point to be converted in the navigation coordinate system.
在选定的导航坐标系中，原点设为O'，该导航坐标系中的待转换点为 P1和P2，导航坐标系原点O'的经纬度海拔(φO',λO',hO')已知，待转换点P1 在导航坐标系下的坐标待转换点P2在导航坐标系下的坐标已知，待转换点P1、P2的经纬度海拔未知。In the selected navigation coordinate system, the origin is set to O', the points to be converted in this navigation coordinate system are P1 and P2, the longitude and latitude altitude of the origin O' of the navigation coordinate system (φO' ,λO' ,hO' ) is known, the coordinates of the point to be converted P1 in the navigation coordinate system The coordinates of the point to be converted P2 in the navigation coordinate system It is known that the latitude and longitude altitudes of the points P1 and P2 to be converted are unknown.
S102、根据导航坐标系原点的经纬度海拔，得到导航坐标系原点的 ECEF坐标。S102: Obtain the ECEF coordinates of the origin of the navigation coordinate system according to the longitude, latitude and altitude of the origin of the navigation coordinate system.
图2示出了两个坐标系：导航坐标系201和ECEF坐标系202，以及 待转换点P1、P2，在图中还可看到格林尼治子午面(本初子午面)203。Figure 2 shows two coordinate systems: the navigation coordinate system 201 and the ECEF coordinate system 202, and the points to be converted P1, P2, in which the Greenwich meridian plane (prime meridian plane) 203 can also be seen.
在导航坐标系201中,原点为O'，N轴在当地水平面指向地理北，E 轴在当地水平面指向东，D轴垂直向下构成右手坐标系。In the navigation coordinate system 201, the origin is O', the N axis points to geographic north on the local horizontal plane, the E axis points to the east on the local horizontal plane, and the D axis is vertically downward to form a right-hand coordinate system.
ECEF坐标系坐标原点为O，z轴指向协议地球的北极，x轴指向本初 子午线与地球赤道的交点，y轴与x轴、z轴构成右手坐标系。The origin of the ECEF coordinate system is O, the z-axis points to the north pole of the Earth, the x-axis points to the intersection of the prime meridian and the earth's equator, and the y-axis, the x-axis and the z-axis form a right-handed coordinate system.
具体地，导航坐标系原点的ECEF坐标，利用经纬度海拔转换至ECEF 地心坐标系的关系式确定，如下：Specifically, the ECEF coordinates of the origin of the navigation coordinate system are determined by using the relationship between the latitude and longitude altitudes converted to the ECEF geocentric coordinate system, as follows:
其中，(xO',yO',zO')为导航坐标系原点O'在ECEF坐标系下的坐标，为 导航坐标系原点O'的经度，λO'导航坐标系原点O'的纬度，hO'为导航坐标系 原点O'的海拔，为地球的横向曲率半径。Among them, (xO' , yO' , zO' ) are the coordinates of the origin O' of the navigation coordinate system in the ECEF coordinate system, is the longitude of the origin O' of the navigation coordinate system, λO ' is the latitude of the origin O' of the navigation coordinate system, hO' is the altitude of the origin O' of the navigation coordinate system, is the lateral radius of curvature of the Earth.
进一步地，的计算公式如下：further, The calculation formula is as follows:
其中，a为WGS-84模型中地球的长半径，e为WGS-84模型中地球 的椭圆偏心率。Among them, a is the long radius of the earth in the WGS-84 model, and e is the elliptical eccentricity of the earth in the WGS-84 model.
S103、根据导航坐标系原点的ECEF坐标以及待转换点在导航坐标系 下的坐标，得到待转换点的ECEF坐标。S103, according to the ECEF coordinates of the origin of the navigation coordinate system and the coordinates of the point to be converted under the navigation coordinate system, obtain the ECEF coordinates of the point to be converted.
具体地，待转换点的ECEF坐标，利用ECEF坐标系转换至导航坐标 系的逆转换关系式确定，如下：Specifically, the ECEF coordinates of the point to be converted are determined by using the inverse conversion relation of the ECEF coordinate system to be converted to the navigation coordinate system, as follows:
其中，(xP,yP,zP)为待转换点P1或P2在ECEF坐标系下的坐标， (xned,yned,zned)为待转换点P1或P2在导航坐标系下的坐标，若表示待转换点 P1，(xned,yned,zned)为若表示待转换点P2，(xned,yned,zned)为(xO',yO',zO')为导航坐标系原点O'在ECEF坐标系下的坐标，R-1为ECEF坐标系变换到导航坐标系的旋转矩阵R的逆矩阵。Among them, (xP , yP , zP ) are the coordinates of the point to be converted P1 or P2 in the ECEF coordinate system, (xned , yned , zned ) are the coordinates of the point to be converted P1 or P2 in the navigation coordinate system Coordinates, if it represents the point P1 to be converted, (xned , yned , zned ) is If it represents the point to be converted P2, (xned , yned , zned ) is (xO' , yO' , zO' ) are the coordinates of the origin O' of the navigation coordinate system in the ECEF coordinate system, and R-1 is the inverse matrix of the rotation matrix R transformed from the ECEF coordinate system to the navigation coordinate system.
进一步地，旋转矩阵R由导航坐标系原点O'的经纬度确定，如下：Further, the rotation matrix R is determined by the longitude and latitude of the origin O' of the navigation coordinate system, as follows:
其中，为导航坐标系原点O'的经度，λO'导航坐标系原点O'的纬度。in, is the longitude of the origin O' of the navigation coordinate system, and λO ' is the latitude of the origin O' of the navigation coordinate system.
S104、根据待转换点的ECEF坐标，得到待转换点的大地坐标；其中， 所述大地坐标包括经度、纬度和海拔。S104. Obtain the geodetic coordinates of the to-be-converted point according to the ECEF coordinates of the to-be-converted point; wherein the geodetic coordinates include longitude, latitude, and altitude.
具体地，待转换点的大地坐标，利用经纬度海拔转换至ECEF地心坐 标系的逆转换关系式确定，如下：Specifically, the geodetic coordinates of the point to be converted are determined by using the inverse conversion relational expression of the latitude and longitude altitude conversion to the ECEF geocentric coordinate system, as follows:
其中，为待转换点P1或P2的经度，λ为待转换点P1或P2的纬度， h为待转换点P1或P2的海拔。in, is the longitude of the point P1 or P2 to be converted, λ is the latitude of the point P1 or P2 to be converted, and h is the altitude of the point P1 or P2 to be converted.
S105、根据待转换点的大地坐标，得到待转换点的高斯投影坐标。S105 , obtaining the Gaussian projection coordinates of the point to be converted according to the geodetic coordinates of the point to be converted.
具体地，待转换点P1或P2的高斯投影坐标，利用大地坐标转换高斯 投影坐标的关系式确定，如下：Specifically, the Gaussian projection coordinates of the point P1 or P2 to be converted are determined by using the relational expression of the geodetic coordinates to convert the Gaussian projection coordinates, as follows:
其中，in,
l＝L-L0l=LL0
t＝tan(B)t=tan(B)
其中，B为纬度，L为经度，L0为中央子午线的经度，a为参考椭球的 长半径，b为参考椭球的短半径，A为赤道到纬度为B的子午线弧长。where B is the latitude, L is the longitude, L0 is the longitude of the central meridian, a is the long radius of the reference ellipsoid, b is the short radius of the reference ellipsoid, and A is the arc length from the equator to the meridian at latitude B.
因为高斯投影坐标为二维平面坐标系，所以将海拔信息舍去，将待转 换点P1的经度和纬度代入上述高斯投影坐标转换公式，得到(XP1,YP1)；同 样地，将海拔信息舍去，将待转换点P2的经度和纬度代入上述高斯投影 坐标转换公式，得到(XP2,YP2)，图3示出了P1和P2两点在高斯投影坐标 系的位置，在高斯投影坐标系中，X，Y分别表示高斯投影坐标系的纵坐 标和横坐标，Oe为高斯投影坐标系的原点。Because the Gaussian projection coordinate is a two-dimensional plane coordinate system, the altitude information is discarded, and the longitude and latitude of the point P1 to be converted are substituted into the above-mentioned Gaussian projection coordinate conversion formula to obtain (XP1 , YP1 ); similarly, the altitude information is Discard, and substitute the longitude and latitude of the point P2 to be converted into the above-mentioned Gaussian projection coordinate conversion formula to obtain (XP2 , YP2 ). In the coordinate system, X and Y respectively represent the ordinate and abscissa of the Gaussian projection coordinate system, and Oe is the origin of the Gaussian projection coordinate system.
根据点P1和P2的高斯投影坐标，最后可以得到P1和P2两点在高斯 投影地图上的距离为According to the Gaussian projection coordinates of points P1 and P2, the distance between P1 and P2 on the Gaussian projection map can be finally obtained as
可以理解的是，本实施例的方法不止局限于一点或两点的坐标转换， 还可以用来计算导航实验中庞大数据到高斯投影地图的转换。It can be understood that the method of this embodiment is not limited to the coordinate transformation of one or two points, and can also be used to calculate the transformation of huge data in a navigation experiment to a Gaussian projection map.
此外，本实施例得到的高斯投影坐标没有包括投影带号和伪偏移量， 投影带号和伪偏移量可在具体使用中加上。In addition, the Gaussian projection coordinates obtained in this embodiment do not include the projected band number and the pseudo offset, and the projected band number and the pseudo offset may be added in specific use.
实施例2：Example 2:
如图4所示，本实施例提供了一种导航坐标转换高斯投影坐标的系统， 该系统包括数据获取模块401、第一ECEF坐标获取模块402、第二ECEF 坐标获取模块403、大地坐标获取模块404和高斯投影坐标获取模块405， 各个模块的具体功能如下：As shown in FIG. 4 , this embodiment provides a system for converting navigation coordinates into Gaussian projection coordinates. The system includes a data acquisition module 401 , a first ECEF coordinate acquisition module 402 , a second ECEF coordinate acquisition module 403 , and a geodetic coordinate acquisition module 404 and the Gaussian projection coordinate acquisition module 405, the specific functions of each module are as follows:
所述数据获取模块401，用于获取数据；其中，所述数据包括导航坐 标系原点的经纬度海拔以及待转换点在导航坐标系下的坐标。The data acquisition module 401 is used to acquire data; wherein, the data includes the longitude, latitude and altitude of the origin of the navigation coordinate system and the coordinates of the point to be converted under the navigation coordinate system.
所述第一ECEF坐标获取模块402，用于根据导航坐标系原点的经纬 度海拔，得到导航坐标系原点的ECEF坐标。The first ECEF coordinate obtaining module 402 is configured to obtain the ECEF coordinates of the origin of the navigation coordinate system according to the latitude, longitude and altitude of the origin of the navigation coordinate system.
所述第二ECEF坐标获取模块403，用于根据导航坐标系原点的ECEF 坐标以及待转换点在导航坐标系下的坐标，得到待转换点的ECEF坐标。The second ECEF coordinate obtaining module 403 is configured to obtain the ECEF coordinates of the point to be converted according to the ECEF coordinates of the origin of the navigation coordinate system and the coordinates of the point to be converted in the navigation coordinate system.
所述大地坐标获取模块404，用于根据待转换点的ECEF坐标，得到 待转换点的大地坐标；其中，所述大地坐标包括经度、纬度和海拔。The geodetic coordinate obtaining module 404 is configured to obtain the geodetic coordinates of the point to be converted according to the ECEF coordinates of the point to be converted; wherein, the geodetic coordinates include longitude, latitude and altitude.
所述高斯投影坐标获取模块405，用于根据待转换点的大地坐标，得 到待转换点的高斯投影坐标。The Gaussian projection coordinate obtaining module 405 is used for obtaining the Gaussian projection coordinates of the point to be converted according to the geodetic coordinates of the point to be converted.
本实施例中各个模块的具体实现可以参见上述实施例1，不再一一赘 述；在此需要说明的是，本实施例提供的装置仅以上述各功能模块的划分 进行举例说明，在实际应用中，可以根据需要而将上述功能分配由不同的 功能模块完成，即将内部结构划分成不同的功能模块，以完成以上描述的 全部或者部分功能。For the specific implementation of each module in this embodiment, reference may be made to the above-mentioned Embodiment 1, and details are not repeated here. It should be noted here that the device provided in this embodiment is only illustrated by the division of the above-mentioned functional modules. , the above-mentioned function distribution can be completed by different function modules according to the needs, that is, the internal structure is divided into different function modules, so as to complete all or part of the functions described above.
可以理解，本实施例的装置所使用的术语“第一”、“第二”等可用于 描述各种模块，但这些模块不受这些术语限制。这些术语仅用于将第一个 模块与另一个模块区分。举例来说，在不脱离本发明的范围的情况下，可 以将第一ECEF坐标获取模块称为第二ECEF坐标获取模块，且类似地， 可将第二ECEF坐标获取模块称为第一ECEF坐标获取模块，第一ECEF 坐标获取模块和第二ECEF坐标获取模块两者都是ECEF坐标获取模块， 但不是同一ECEF坐标获取模块。It can be understood that the terms "first", "second", etc. used in the apparatus of this embodiment can be used to describe various modules, but these modules are not limited by these terms. These terms are only used to distinguish the first module from another. For example, without departing from the scope of the present invention, a first ECEF coordinate acquisition module may be referred to as a second ECEF coordinate acquisition module, and similarly, a second ECEF coordinate acquisition module may be referred to as a first ECEF coordinate acquisition module The acquisition module, the first ECEF coordinate acquisition module and the second ECEF coordinate acquisition module are both ECEF coordinate acquisition modules, but are not the same ECEF coordinate acquisition module.
实施例3：Example 3:
本实施例提供了一种电子设备，该电子设备可以为用户随身携带的移 动终端，如智能手机、掌上电脑、平板电脑中的任意一种，也可以是其他 具有显示和计算功能的电子设备，本实施例以智能手机为例，对电子设备 进行说明，如图5所示，该电子设备可以包括RF(Radio Frequency，射频) 电路501、存储器502、输入单元503、显示单元504、传感器505、音频 电路506、传输模块507、处理器508、电源509等部件。This embodiment provides an electronic device, which can be a mobile terminal carried by a user, such as any one of a smart phone, a handheld computer, and a tablet computer, or other electronic devices with display and computing functions, This embodiment takes a smartphone as an example to describe an electronic device. As shown in FIG. 5 , the electronic device may include an RF (Radio Frequency, radio frequency) circuit 501, a memory 502, an input unit 503, a display unit 504, a sensor 505, Audio circuit 506, transmission module 507, processor 508, power supply 509 and other components.
RF电路501用于接收以及发送电磁波，实现电磁波与电信号的相互转 换，从而与通讯网络或者其他设备进行通讯。RF电路501可包括各种现有 的用于执行这些功能的电路元件，例如天线、射频收发器、数字信号处理 器、加密/解密芯片、用户身份模块(SIM)卡、存储器等等。RF电路501 可与各种网络如互联网、企业内部网、无线网络进行通讯或者通过无线网 络与其他设备进行通讯。上述的无线网络可包括蜂窝式电话网、无线局域 网或者城域网。上述的无线网络可以使用各种通信标准、协议及技术，包 括但并不限于全球移动通信系统(Global System for Mobile Communication，GSM)、增强型移动通信技术(Enhanced Data GSM Environment，EDGE)， 宽带码分多址技术(wideband code divisionmultiple access，W-CDMA)， 码分多址技术(Code division access，CDMA)、时分多址技术(time division multiple access，TDMA)，无线保真技术(Wireless Fidelity，WiFi)、网络 电话(Voice over internet protocal，VoIP)、全球微波互联接入(WorldwideInteroperability for Microwave Access，Wi-Max)、其他用于邮件、即时通讯 及短消息的协议，以及任何其他合适的通讯协议，甚至可包括那些当前仍 未被开发出来的协议。The RF circuit 501 is used for receiving and sending electromagnetic waves, realizing mutual conversion between electromagnetic waves and electrical signals, so as to communicate with a communication network or other devices. RF circuit 501 may include various existing circuit elements for performing these functions, such as antennas, radio frequency transceivers, digital signal processors, encryption/decryption chips, subscriber identity module (SIM) cards, memory, and the like. The RF circuit 501 can communicate with various networks such as the Internet, an intranet, a wireless network, or with other devices over a wireless network. The aforementioned wireless network may include a cellular telephone network, a wireless local area network, or a metropolitan area network. The above-mentioned wireless network can use various communication standards, protocols and technologies, including but not limited to Global System for Mobile Communication (GSM), Enhanced Data GSM Environment (EDGE), wideband code Wideband code division multiple access technology (W-CDMA), code division multiple access technology (Code division multiple access, CDMA), time division multiple access technology (time division multiple access, TDMA), wireless fidelity technology (Wireless Fidelity, WiFi ), Voice over internet protocal (VoIP), Worldwide Interoperability for Microwave Access (Wi-Max), other protocols for mail, instant messaging and short messages, and any other suitable communication protocol, It can even include protocols that are not currently being developed.
存储器502包括计算机可读存储介质，可用于存储计算机程序；存储 器502可包括高速随机存储器，还可包括非易失性存储器，如一个或者多 个磁性存储装置、闪存、或者其他非易失性固态存储器，非易失性存储器 可包括操作系统和数据库；此外，存储器502可进一步包括相对于处理器 508远程设置的存储器，这些远程存储器可以通过网络连接至用户设备； 其中，所述网络包括但不限于互联网、企业内部网、局域网、移动通信网 及其组合；处理器508通过运行存储在存储器502内的计算机程序时，从 而实现上述实施例1的导航坐标转换高斯投影坐标的方法，具体为：获取 数据,所述数据包括导航坐标系原点的经纬度海拔以及待转换点在导航坐 标系下的坐标；根据导航坐标系原点的经纬度海拔，得到导航坐标系原点 的ECEF坐标；根据导航坐标系原点的ECEF坐标以及待转换点在导航坐 标系下的坐标，得到待转换点的ECEF坐标；根据待转换点的ECEF坐标， 得到待转换点的大地坐标，所述大地坐标包括经度、纬度和海拔；根据待 转换点的大地坐标，得到待转换点的高斯投影坐标。Memory 502 includes computer-readable storage media that can be used to store computer programs; memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory memory, non-volatile memory may include operating system and database; in addition, memory 502 may further include memory located remotely relative to processor 508, these remote memories may be connected to user equipment through a network; wherein said network includes but does not Limited to the Internet, an intranet, a local area network, a mobile communication network and a combination thereof; when the processor 508 runs the computer program stored in the memory 502, thereby realizing the method for converting the navigation coordinates of the above-mentioned embodiment 1 into Gaussian projection coordinates, specifically: Obtain data, the data includes the latitude and longitude altitude of the origin of the navigation coordinate system and the coordinates of the point to be converted under the navigation coordinate system; According to the latitude and longitude altitude of the origin of the navigation coordinate system, the ECEF coordinates of the origin of the navigation coordinate system are obtained; ECEF coordinates and the coordinates of the point to be converted in the navigation coordinate system, the ECEF coordinates of the point to be converted are obtained; according to the ECEF coordinates of the point to be converted, the geodetic coordinates of the point to be converted are obtained, and the geodetic coordinates include longitude, latitude and altitude; The geodetic coordinates of the point to be converted get the Gaussian projection coordinates of the point to be converted.
输入单元503可用于接收输入的数字或字符信息，以及产生与用户设 置以及功能控制有关的键盘、鼠标、操作杆、光学或者轨迹球信号输入； 具体地，输入单元503可包括触敏表面以及其他输入设备，触敏表面也称 为触摸显示屏或者触控板，可收集用户在其上或附近的触摸操作(比如用 户使用手指、触笔等任何适合的物体或附件在触敏表面上或在触敏表面附 近的操作)，并根据预先设定的程式驱动相应的连接装置。可选的，触敏 表面可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检 测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制 器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标， 再送给处理器180，并能接收处理器508发来的命令并加以执行。此外， 可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触敏表面。 除了触敏表面，输入单元503还可以包括其他输入设备，具体地，其他输 入设备可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按 键等)、轨迹球、鼠标、操作杆等中的一种或多种。The input unit 503 can be used to receive input numerical or character information, and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control; specifically, the input unit 503 can include a touch-sensitive surface and other An input device, a touch-sensitive surface also known as a touch display or trackpad, collects the user's touch operations on or near it (such as the user's finger, stylus, etc., any suitable object or accessory on the touch-sensitive surface or operation near the touch-sensitive surface), and actuate the corresponding connection device according to the preset program. Alternatively, the touch-sensitive surface may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 180, and can receive and execute commands from the processor 508. Additionally, the touch-sensitive surface can be implemented using resistive, capacitive, infrared, and surface acoustic wave types. In addition to the touch-sensitive surface, the input unit 503 may also include other input devices, specifically, other input devices may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, etc. one or more of.
显示单元504可用于显示由用户输入的信息或提供给用户的信息以用 户设备的各种图形用户接口，这些图形用户接口可以由图形、文本、图标、 视频和其任意组合来构成；显示单元504可包括显示面板，可选的，可以 采用LCD(Liquid Crystal Display，液晶显示器)、OLED(Organic Light-Emitting Diode，有机发光二极管)等形式来配置显示面板；进一步 地，触敏表面可覆盖显示面板，当触敏表面检测到在其上或附近的触摸操 作后，传送给处理器508以确定触摸事件的类型，随后处理器508根据触 摸事件的类型在显示面板上提供相应的视觉输出，触敏表面与显示面板作 为两个独立的部件来实现输入和输入功能，在某些情况下，也可以将触敏 表面与显示面板集成而实现输入和输出功能。The display unit 504 may be used to display information input by the user or information provided to the user as various graphical user interfaces of the user equipment, which may be composed of graphics, text, icons, video, and any combination thereof; the display unit 504 A display panel may be included, and optionally, the display panel may be configured in the form of an LCD (Liquid Crystal Display, liquid crystal display), an OLED (Organic Light-Emitting Diode, organic light-emitting diode), etc.; further, the touch-sensitive surface may cover the display panel , when the touch-sensitive surface detects a touch operation on or near it, it is transmitted to the processor 508 to determine the type of the touch event, and then the processor 508 provides corresponding visual output on the display panel according to the type of the touch event. The surface and the display panel are used as two separate components to realize the input and input functions, and in some cases, the touch-sensitive surface and the display panel can also be integrated to realize the input and output functions.
传感器505至少有一种，比如光传感器、运动传感器以及其他传感器。 具体地，光传感器可包括环境光传感器和接近传感器，其中，环境光传感 器可根据环境光线的明暗来调节显示面板的亮度，接近传感器可在用户设 备移动到耳边时，关闭显示面板和/或背光；作为运动传感器的一种，重力 加速度传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可 检测出重力的大小及方向，可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击) 等；用户设备还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感 器等其他传感器，在此不再赘述。There are at least one type of sensor 505, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel according to the brightness of the ambient light, and the proximity sensor may turn off the display panel and/or when the user equipment moves to the ear Backlight; as a type of motion sensor, the gravitational acceleration sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary, and can be used for applications that recognize the posture of the mobile phone (such as switching between horizontal and vertical screens). , related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; user equipment can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, here No longer.
音频电路506连接扬声器和传声器，可提供用户与用户设备之间的音 频接口。音频电路506可将接收到的音频数据转换后的电信号，传输到扬 声器，由扬声器转换为声音信号输出；另一方面，传声器将收集的声音 信号转换为电信号，由音频电路506接收后转换为音频数据，再将音频数 据输出处理器508处理后，经RF电路2021以发送给比如另一终端，或者 将音频数据输出至存储器502以便进一步处理。音频电路506还可能包括 耳塞插孔，以提供外设耳机与用户设备的通信。Audio circuitry 506 connects speakers and microphones to provide an audio interface between the user and user equipment. The audio circuit 506 can convert the received audio data into an electrical signal, and transmit it to the speaker, which is converted into a sound signal for output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received and converted by the audio circuit 506. In the form of audio data, the audio data is output to the processor 508 for processing, and then sent to, for example, another terminal via the RF circuit 2021, or the audio data is output to the memory 502 for further processing. Audio circuitry 506 may also include an earbud jack to provide for communication of peripheral headphones with the user device.
用户设备通过传输模块507(例如WiFi模块)以帮助用户收发电子邮 件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。The user equipment helps the user to send and receive emails, browse web pages, access streaming media, etc. through the transmission module 507 (such as a WiFi module), which provides the user with wireless broadband Internet access.
处理器508是用户设备的控制中心，利用各种接口和线路连接整个手 机的各个部分，通过运行或执行存储在存储器502内的软件程序和/或模块， 以及调用存储在存储器502内的数据，执行用户设备的各种功能和处理数 据，从而对手机进行整体监控。可选的，处理器508可包括一个或多个处 理核心；优选地，处理器508可集成应用处理器和调制解调处理器，其中， 应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到 处理器508中。The processor 508 is the control center of the user equipment, using various interfaces and lines to connect various parts of the entire mobile phone, by running or executing the software programs and/or modules stored in the memory 502, and calling the data stored in the memory 502, Execute various functions of the user equipment and process data to monitor the mobile phone as a whole. Optionally, the processor 508 may include one or more processing cores; preferably, the processor 508 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc. , the modem processor mainly deals with wireless communication. It can be understood that the above-mentioned modulation and demodulation processor may not be integrated into the processor 508.
电源509(比如电池)用于给各个部件供电，优选的，电源可以通过 电源管理系统与处理器508逻辑连接，从而通过电源管理系统实现管理充 电、放电、以及功耗管理等功能。电源509还可以包括一个或一个以上的 直流或交流电源、再充电系统、电源故障检测电路、电源转换器或者逆变 器、电源状态指示器等任意组件。The power supply 509 (such as a battery) is used to supply power to various components. Preferably, the power supply can be logically connected to the processor 508 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system. Power supply 509 may also include one or more DC or AC power sources, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and any other components.
尽管未示出，上述用户设备还可以包括摄像头、蓝牙模块等，在此不 再赘述。Although not shown, the above-mentioned user equipment may also include a camera, a Bluetooth module, etc., which will not be repeated here.
实施例4：Example 4:
本实施例提供一种存储介质，该存储介质为计算机可读存储介质，其 存储有计算机程序，计算机程序被处理器执行时，实现上述实施例1的导 航坐标转换高斯投影坐标的方法，具体为：获取数据,所述数据包括导航 坐标系原点的经纬度海拔以及待转换点在导航坐标系下的坐标；根据导航 坐标系原点的经纬度海拔，得到导航坐标系原点的ECEF坐标；根据导航 坐标系原点的ECEF坐标以及待转换点在导航坐标系下的坐标，得到待转 换点的ECEF坐标；根据待转换点的ECEF坐标，得到待转换点的大地坐 标，所述大地坐标包括经度、纬度和海拔；根据待转换点的大地坐标，得 到待转换点的高斯投影坐标。This embodiment provides a storage medium, where the storage medium is a computer-readable storage medium, and stores a computer program. When the computer program is executed by a processor, the method for converting a navigation coordinate into a Gaussian projection coordinate according to the above-mentioned embodiment 1 is implemented, specifically: : obtain data, the data includes the latitude and longitude altitude of the origin of the navigation coordinate system and the coordinates of the point to be converted under the navigation coordinate system; obtain the ECEF coordinates of the origin of the navigation coordinate system according to the latitude and longitude altitude of the origin of the navigation coordinate system; according to the origin of the navigation coordinate system The ECEF coordinates of the point to be converted and the coordinates of the point to be converted under the navigation coordinate system, obtain the ECEF coordinates of the point to be converted; According to the ECEF coordinates of the point to be converted, the geodetic coordinates of the point to be converted are obtained, and the geodetic coordinates include longitude, latitude and altitude; According to the geodetic coordinates of the point to be converted, the Gaussian projection coordinates of the point to be converted are obtained.
本实施例中的存储介质可以是磁盘、光盘、计算机存储器、只读存储 器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、U盘、移动硬盘等介质。The storage medium in this embodiment may be a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a U disk, a removable hard disk, and other media.
综上所述，本发明先将待转换点的导航坐标转换为ECEF坐标，接着 转换为大地坐标，最后利用大地坐标计算出待转换点的高斯投影坐标，可 以解决在GPS数据缺失的情况下，对已有的导航坐标系原点的经纬度海拔 以及待转换点在导航坐标系下的坐标进行处理，转换成高斯投影坐标系下 的坐标，从而获得地球上的物理点间在高斯投影地图上的距离。To sum up, the present invention first converts the navigation coordinates of the point to be converted into ECEF coordinates, then converts them into geodetic coordinates, and finally uses the geodetic coordinates to calculate the Gaussian projection coordinates of the point to be converted, which can solve the problem of missing GPS data. Process the latitude, longitude and altitude of the origin of the existing navigation coordinate system and the coordinates of the point to be converted in the navigation coordinate system, and convert them into coordinates in the Gaussian projection coordinate system, so as to obtain the distance between the physical points on the earth on the Gaussian projection map. .
以上所述，仅为本发明专利较佳的实施例，但本发明专利的保护范围 并不局限于此，任何熟悉本技术领域的技术人员在本发明专利所公开的范 围内，根据本发明专利的技术方案及其发明构思加以等同替换或改变，都 属于本发明专利的保护范围。The above is only a preferred embodiment of the patent of the present invention, but the protection scope of the patent of the present invention is not limited to this. The technical solution and the inventive concept of the invention are equivalently replaced or changed, all belong to the protection scope of the patent of the present invention.
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