帮我写出XYZ转ENU的C++代码
时间: 2024-03-28 16:41:56 浏览: 26
以下是一个简单的XYZ转ENU的C++代码示例:
```cpp
#include <cmath>
// Convert XYZ coordinates to ENU
void xyz2enu(double x, double y, double z, double lat0, double lon0, double alt0, double &east, double &north, double &up) {
// Constants
const double a = 6378137.0; // semi-major axis of the Earth (meters)
const double b = 6356752.3142; // semi-minor axis of the Earth (meters)
const double f = (a - b) / a; // flattening of the Earth
const double e_sq = f * (2 - f); // squared eccentricity
// Convert geodetic coordinates to ECEF coordinates
double cos_lat = std::cos(lat0);
double sin_lat = std::sin(lat0);
double cos_lon = std::cos(lon0);
double sin_lon = std::sin(lon0);
double N = a / std::sqrt(1 - e_sq * sin_lat * sin_lat);
double x0 = (N + alt0) * cos_lat * cos_lon;
double y0 = (N + alt0) * cos_lat * sin_lon;
double z0 = ((1 - e_sq) * N + alt0) * sin_lat;
// Convert ECEF coordinates to ENU coordinates
double dx = x - x0;
double dy = y - y0;
double dz = z - z0;
east = -sin_lon * dx + cos_lon * dy;
north = -sin_lat * cos_lon * dx - sin_lat * sin_lon * dy + cos_lat * dz;
up = cos_lat * cos_lon * dx + cos_lat * sin_lon * dy + sin_lat * dz;
}
```
其中,x、y、z是XYZ坐标,lat0、lon0、alt0是参考点的经纬度和高度,east、north、up是转换后的ENU坐标。
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