基于完好性监测的周跳修复方法  

An Approach of Cycle Slip Detection and Restoration Based on RAIM

作　　者：苑振国 郭家正 YUAN Zhenguo;GUO Jiazheng(School of Mechatronics,Guangdong Industry Polytechnic,Guangzhou 510300,China;Grantop Group Co.Ltd,Guangzhou 510050,China)

机构地区：[1]广东轻工职业技术学院机电技术学院,广东广州510300 [2]广州环保投资集团有限公司,广东广州510050

出　　处：《广东轻工职业技术学院学报》2018年第4期1-5,共5页Journal of Guangdong Industry Polytechnic

基　　金：广东省教育厅重大科研项目"产教融合;探索北斗+智慧物流创新人才的培养与实践"(2018CSLKT3-107)

摘　　要：为了解决卫星系统在精密定位中出现的周跳问题,设计了一个综合完好性监测与多项式拟合的周跳修复方法。该方法将时间相邻的载波相位数据做差,在消除部分共有误差的同时,得到一个高精度的观测量。然后利用差分后的观测量设计完好性监测方案,检测出发生周跳的历元,最后利用Chebyshev多项式计算出周跳的大小并修复。经实验验证,选取合适的截止高度角,设计的综合算法可以有效修复不同大小的周跳,降低精密定位对接收机的性能要求。An approach of cycle slip detection and restoration based on receiver automatic integrity monitoring(RAIM)is proposed according to the cycle slip problem that occurs in Global Positioning System(GPS)precision measurement.A standalone receiver of low cost single frequency,carrier phase data is made difference between adjacent epoch in order to eliminate ill effect of some common error.Use least-square residuals to design RAIM scheme with differential carrier phase data to detect out epoch with cycle slip.Finally making repair of cycle slip by Chebyshev polynomial.Results indicate that the approach can detect cycle slip effectively with proper cut-off elevation angle and both big cycle slip and small cycle slip could be repaired.Meanwhile,the performance requirements of receiver can be decreased.

关 键 词：卫星定位 周跳修复 完好性监测 CHEBYSHEV多项式 

分 类 号：P228.41[天文地球—大地测量学与测量工程]