在GPS差分定位中，地球平动对于数据处理时的影响-In the GPS differential positioning, earth translation for data processing effect

GPS网平差程序，对于平差非常有用，适合初学者-Adjustment of auxiliary function is very useful to the design of measuring adjustment procedure, suitable for beginners

结合GPS，vb，通过编程对坐标进行正反算以及进行网平差-Combined with VB, GPS, through programming on the coordinates of the positive and negative calculation as well as network adjustment