干涉式量子定位辅助卫星导航周跳探测与修复方法

A Method of Cycle Slips Detection and Recovery Aided by Interferometric Quantum Position System in Satellite Navigation

快速准确对周跳进行探测与修复是卫星导航高精度定位必须解决的关键问题。干涉式量子定位系统达到高精度必须具有良好PDOP(位置精度因子),但是受基线布置的影响,在整个覆盖区的PDOP并不能保证都是理想的。提出了利用干涉式量子定位某个方向高精度测距信息辅助卫星导航,进行周跳探测与修复方法。推导了干涉式量子定位与卫星导航网络RTK两者结合的定位方程,在新的定位模型下,采用Household变换以及LAMBDA算法,充分利用量子高精度测距所提供的信息,逐历元计算出卫星导航RTK测量中双差的整周模糊度,从而根据该模糊度的变化进行周跳的探测与修复。仿真分析表明:该方法可以在单历元内检测到周跳的存在,并在后续的短历元内正确地修复周跳。

Quick and precise detection and recovery of cycle slips are a key issue to be solved in high precise positioning of satellite navigation.In order to achieve high precision positioning,the interferometric Quantum Positioning System（QPS）must provide a good Position Dilution of Precision（PDOP）.The PDOP is not ideal throughout coverage area under the influence of different baseline layouts.A new method of cycle slips detection and recovery is proposed by utilizing the precise quantum ranging of the interferometric Quantum Positioning System to locate at a certain direction in aid of a satellite navigation and cycle slips detection and recovery.The positioning equation of interferometric Quantum Positioning System（QPS）integrated with satellite navigation network RTK is deduced.Under the new positioning model Household transformations and Least-squares Ambiguity Decorrelation Adjustment（LAMBDA）algorithm are adopted to determine the Double Difference Integral Ambiguity（DDIA）of satellite navigation network RTK by means of precise quantum ranging.Cycle slips can be detected and recovered according to variation ofDDIA.The simulation results show that the method can determine cycle slips in an epoch and recover the cycle slips correctly within subsequent short epochs.