使用白塞尔方法进行大地主题解算，正算由大地线和大地方位角计算经纬度，反算有经纬度计算大地线长度和大地方位角(Using the white Searl method to solve the geodetic problem, we calculate the longitude and latitude by the geodesic and the earth azimuth, and calculate the geodesic length and the large local ang

通过c#编写的小程序，进行大地主题的正反算。(A small program written by c# is used to carry out the positive and negative calculation of the earth's theme.)