地基导航系统高性能快速定位算法

High Performance and Fast Positioning Algorithm for Ground-Based Navigation Systems

地基伪卫星的基站固定,其对于静态或者低动态的用户缺乏快速的几何变化,需要较长的观测历元来实现定位解算.为了实现地基导航系统的精密单点定位的快速解算,针对该问题提出利用TIKHNOV正则化算法并与无人机搭载伪卫星平台来辅助地基伪卫星进行定位的方案.通过仿真验证,TIKHNOV正则化的加入能够在一定程度上提高模糊度解算精度,而空中伪卫星搭载平台的加入不仅能够使得定位结果快速收敛,并且能够提高模糊度浮点解的定位精度,两者相结合能够使得定位算法达到最优化.

The base station of the ground-based pseudo satellite is fixed,and it lacks the fast geometric change for the static or low dynamic users.It needs a long observation epoch to solve the problem of location calculation.In order to realize the fast calculation of the precision single point positioning of the ground-based navigation system,the TIKHNOV regularization algorithm and the pseudo satellite platform of the unmanned aerial vehicle(UAV)are proposed to assist the positioning of the pseudo satellite.The simulation shows that the addition of TIKHNOV regularization can improve the positioning accuracy of ambiguity to a certain extent,and the addition of the airborne pseudo satellite platform can not only make the positioning result converge quickly,but also improve the positioning accuracy of the ambiguity floating point solution.The combination of the two can make the location algorithm achieve optimization.