尽管现在捷联惯导 GPS测向 应用很广泛 测量精度很精确 但不可避免都有自身的缺点，因此再次讨论常规无线电测向测姿问题-Although SINS application of GPS measurements to a wide range of measurement accuracy is very precise but inevitably has its own shortcomings, so once again the discussion of conventional ra