A Delay Measurement Algorithm of C/A Signal Transmission Channel for GPS Satellite

Abstract

Abstract:The delay measurement accuracy of the transmission channel directly affects GPS users’ positioning precision and time transfer accuracy of GPS. To measure delay of C/A (Coarse/Acquisition）signal transmission channel high accurately, a delay measurement algorithm based on DSP (Digital Signal Processing) was introduced. The C/A signal and the pulse of Z counter of time keeping system on GPS satellite are sampling in synchronization. After C/A signal data pre-processed, multi-rate digital processing is made to decide the start point of PRN (Pseudorandom noise) code of C/A signal. With the processing results of Z pulse signal data, the delay of C/A signal channel is calculated out. The measurement uncertainty with the proposed algorithm is less than 0.2 ns when the sampling frequency is 10 Gsa/s.

Key words:global positioning system （GPS）,satellite,coarse/acquisition signal,transmission channel,delay measurement

CLC Number:

TN 967.1

CUI Xiao-Zhun, MI Hong, LI Yi, CHEN Zhong-Gui. A Delay Measurement Algorithm of C/A Signal Transmission Channel for GPS Satellite[J]. Journal of Shanghai Jiaotong University, 2012, 46(11): 1843-1847.

[1]	WANG Xiaoliang, YAO Xiaosong, GAO Shuang, LIU Guohua.Aerodynamic Drag Characteristics of Ultra-Low Orbit Satellites[J]. Journal of Shanghai Jiao Tong University, 2022, 56(8): 1089-1100.
[2]	SU Hong1 (苏红), WU Bozhao2 (吴博钊), MAO Xuchu1∗ (茅旭初).Non-Line-of-Sight Multipath Detection Method for BDS/GPS Fusion System Based on Deep Learning[J]. J Shanghai Jiaotong Univ Sci, 2022, 27(6): 844-854.
[3]	SUN Hongqiang, ZHANG Zhanyue, FANG Yuqiang.Formation Satellite Reconstruction Strategy Based on NSGA-II Algorithm[J]. Journal of Shanghai Jiao Tong University, 2021, 55(3): 320-330.
[4]	ZHAO Fang, SUN Jin, ZHAO Jianjun, YANG Libin .Indirect-Inversion Algorithm via Precise Integration for Ill-Conditioned Matrix in Ambiguity Resolution[J]. J Shanghai Jiaotong Univ Sci, 2020, 25(6): 762-768.
[5]	ZHOU Jian (周剑), YANG Qidong (杨启东), ZHANG Xiaofei (张小飞), HAN Chong (韩崇), SUN Lijuan (孙力娟).Traffic Prediction Method for GEO Satellites Combining ARIMA Model and Grey Model[J]. Journal of Shanghai Jiao Tong University (Science), 2020, 25(1): 65-69.
[6]	CHEN Shuhao (陈树浩), MAO Xuchu (茅旭初).Research and Implementation of Beidou-3 Satellite Multi-Band Signal Acquisition and Tracking Method[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(5): 571-578.
[7]	YE Yingwei (叶颖微), SUN Jian* (孙健), LUO Jing (罗京) .Analyzing Spatio-Temporal Distribution Pattern and Correlation for Taxi and Metro Ridership in Shanghai[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(2): 137-147.
[8]	ZHOU Jingmei *(周经美), ZHAO Xiangmo (赵祥模), CHENG Xin (程鑫), XU Zhigang (徐志刚), ZHAO Huaixin (赵怀鑫).Vehicle Ego-Localization Based on Streetscape Image Database Under Blind Area of Global Positioning System[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(1): 122-129.
[9]	Wei Xiaona, Xu Haibin, Chen Jinqiang, Dong Yunfeng.A Collaborative Optimization Method by Introducing Subsystem Optimization and Its Application[J]. Air & Space Defense, 2018, 1(2): 1-6.
[10]	Fu Lili, Peng Qiaole, Zhou Xiaozhou, Zhou Min, Huang Wentao.Design and Simulation of Fast Clustering and Sorting Algorithm on Satellite-borne Electronic Reconnaissance System[J]. Air & Space Defense, 2018, 1(2): 53-58.
[11]	JIN Jing,YANG Zhaolin,LIU Litong,ZHOU Jianjun.Fully-Integrated Reconfigurable CMOS Global Navigation Satellite System Receivers with High-Linearity[J]. Journal of Shanghai Jiaotong University, 2018, 52(10): 1226-1233.
[12]	ZHEN Ruchen (甄儒辰), HAN Chong* (韩充).Link Budget Analysis for Massive-Antenna-Array-Enabled Terahertz Satellite Communications[J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(1): 20-27.
[13]	GONG Caihe,MAO Xuchu,LI Shaoyuan.A Fast Satellite Selection Algorithm for BDS/GPS Dual Navigation System[J]. Journal of Shanghai Jiaotong University, 2017, 51(6): 641-646.
[14]	WANG Xiaolan1,2,MA Guanyi1,WAN Qingtao1,LI Jinghua1,FAN Jiangtao1,ZHANG Jie1,2.A Fast Totel Electron Content Derivation Based on GNSS Observation[J]. Journal of Shanghai Jiaotong University, 2017, 51(2): 214-.
[15]	XU Xiaojun1,2，MA Lihua1，AI Guoxiang1.Satellite Selection with Multi-Objective Genetic Algorithm for Multi-GNSS Constellations[J]. Journal of Shanghai Jiaotong University, 2017, 51(12): 1520-1528.

A Delay Measurement Algorithm of C/A Signal Transmission Channel for GPS Satellite

Knowledge

Abstract

Cite this article

share this article

References

Related Articles15

Recommended Articles

Metrics

Comments