摘要
针对全球卫星导航系统(GNSS)数据处理中周跳探测与修复方法的合理选择问题,本文对三种常见的周跳探测与修复方法的性能进了评价分析.给出一种基于数理统计理论的周跳探测结果可靠性评价新方法,利用该新方法评价了多项式拟合法和TurboEdit法对同一组双频实测数据进行周跳探测所得结果的可靠性,以及多项式拟合法和三频无几何组合法对同一组三频实测数据进行周跳探测所得结果的可靠性.综合两组评价结果可知,对于双频实测数据而言,TurboEdit法的探测效果优于多项式拟合法;对三频实测数据而言,三频无几何组合法的探测效果优于多项式拟合法;但多项式拟合法对双频、三频观测数据均可进行周跳探测与修复,因此适用性更广.
Aiming at the problem of reasonable selection of cycle slip detection and repair methods in GNSS data processing,this paper evaluates and analyzes the performance of three common cycle slip detection and repair methods.A new method for evaluating the reliability of cycle slip detection results based on mathematical statistics is given.The new method is used to evaluate the reliability of cycle slip detection results obtained by polynomial fitting method and the TurboEdit method on the same set of dual-frequency real data,and the reliability of the cycle slip detection results obtained by the polynomial fitting method and the triple-frequency geometric-free combination method on the same set of three-frequency measured data is analyzed.Based on the evaluation results of the two groups,it can be seen that the detection effect of the TurboEdit method is better than that of the polynomial fitting method for the dual-frequency real data while for the triple-frequency real data,the detection effect of the triple-frequency geometric-free combination method is better than the polynomial fitting method;The polynomial fitting method can detect and repair cycle slips on dual-frequency and triple-frequency observation data,so it has a wider applicability.
作者
夏思琦
于先文
齐晨
XIA Siqi;YU Xianwen;QI Chen(School of Transportation,Southeast University,Nanjing 210000,China)
出处
《全球定位系统》
CSCD
2020年第5期1-5,13,共6页
Gnss World of China
基金
国家自然科学基金项目(41974030,41674035)。
关键词
多项式拟合法
TurboEdit法
三频无几何组合法
性能分析
polynomial fitting method
TurboEdit method
triple-frequency geometric-free combination method
performance evaluation
