Doppler Cycle Slip Detection and Repair of Low Sampling Rate

被引：3

作者：

Ji, Yuanfa ^{[1
,2
,3
]}

Jia, Xizi ^{[1
,2
]}

Sun, Xiyan ^{[1
,2
,3
]}

Yan, Suqing ^{[1
,2
]}

Wu, Sunyong ^{[1
,2
]}

Wang, Shouhua ^{[1
,2
]}

Gan, Xingli ^{[4
]}

机构：

[1] Guilin Univ Elect Technol, Guangxi Key Lab Precis Nav Technol & Applicat, Guilin 541004, Peoples R China

[2] Natl & Local Joint Engn Res Ctr Satellite Nav & L, Guilin 541004, Peoples R China

[3] Guilin Univ Elect Technol, Guangxi Expt Ctr Informat Sci, Guilin 541004, Peoples R China

[4] State Key Lab Satellite Nav Syst & Equipment Tech, Shijiazhuang 050000, Hebei, Peoples R China

来源：

2018 7TH INTERNATIONAL CONFERENCE ON DIGITAL HOME (ICDH 2018) | 2018年

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

low sampling rate; Doppler; Lagrangian; polynomial fitting;

D O I：

10.1109/ICDH.2018.00028

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In the cycle slip detection and repair of satellite navigation and positioning, the Doppler observation is protected from the cycle slip, which can assist the carrier phase data for cycle slip detection. However, as the sampling rate decreases, the correlation between the error of the epochs also decrease, and the cycle slip detection capability is significantly reduced. To solve this problem, the author proposes a method of detecting and repairing Doppler cycle slip for low sampling rate. The method first uses the Lagrange interpolation algorithm to interpolate the low sampling rate Doppler observations to the is sampling interval, and performs polynomial fitting on the interpolated values to obtain Doppler values with less noise. Finally, the Doppler value extrapolated by the polynomial fit is subtracted from the interpolated Doppler value to obtain the cycle slip value. The simulation example that using GPS data for solution analysis shows that the detection accuracy of the new method is about 3 times and 4 times higher than the 5s and 10s sampling interval of the traditional Doppler integration method, and the detection accuracy is increased by 20% and 30% respectively.

引用

页码：111 / 115

页数：5