北斗二号卫星导航系统PVT计算优化设计

Optimum Design of COMPASS Navigation Satellite System PVT Solution

以北斗卫星导航系统为应用背景,着重研究了北斗二号导航接收机的PVT解算过程,在保证定位结果精度的前提下,提高PVT解算速度、增加系统稳定性的优化设计方法,该方法针对PVT解算中的卫星位置速度计算和伪距修正两个运算模块进行了处理,先降低了计算的频率,再使用其他方法获取结果的近似值.并实际使用接收机对优化方法进行了实际测试与数据分析,证明了方法的可行性.

Based on the background of COMPASS navigation satellite system, this paper is focuses on optimizing methods to keep positioning accuracy, improves the calculating speed and increases the stability of the system in the COMPASS navigation satellite receiver PVT solution process. The method is directed against the solution of the satellite position, velocity and the pseudo-range correction module. Firstly, the computational frequencies are reduced. Then other methods are used to achieve approximation of the result. Finally, receiver is used to assess the optimizing method, and it proves that the method is easy and effective.