北斗三号卫星周跳探测的不同算法研究

Research on different algorithms of BDS-3 cycle slip detection

在北斗高精度定位中,周跳的探测与修复是必不可少的一个环节。基于北斗三号卫星组网已趋于完善,文中系统地深入研究了北斗三号卫星周跳探测的理论与方法,主要介绍了组合观测值法(包括电离层残差法、相位减伪距法、M-W组合法)对北斗载波相位观测值周跳探测的理论基础。利用组合观测值法,以北斗三号卫星数据为例,对这三种方法的探测能力和效果进行了试验、分析与比较。

Detection and repair of the cycle slip were the indispensable link in the Beidou high-precision positioning.Based on the the increasingly perfect BDS-3 network,in this paper,the theory and the method of BDS-3 cycle slip detection were studied systematically and deeply.Theoretical basis of combination observation methods(including the ionospheric residual method,the phase subtraction pseudorange method,M-W combination method)were introduced to carry out the cycle slip detection to Beidou carrier phase observation.Taking BDS-3 data as an example,the detection capabilities and the effects of these three methods were tested,analyzed and compared using the combined observation method and some useful conclusions were obtained.