通信与信息技术Issue(2)：1-5,5.
PMF+双门限Tong检测的北斗B1I信号捕获算法
Beidou B1I signal acquisition algorithm based on PMF + double threshold Tong detection
刁彦华 1徐亚丽 1王晓君 1刘昊昱2
作者信息
- 1. 河北科技大学 信息科学与工程学院,河北石家庄 050018
- 2. 中国电子科技集团第五十四研究所,河北石家庄 050081
- 折叠
摘要
Abstract
Aiming at the problems of long detection time and high probability of missed alarm of traditional Tong detection algo-rithm,PMF+double threshold Tong detection algorithm is proposed to be applied to the acquisition of Beidou B1I signal.First,the IF signal processed by the RF front-end module is down converted to baseband,and the baseband signal is preprocessed such as speed re-duction;Then,the partial matched filter(PMF)algorithm is used to calculate the correlation value.The data signal is divided into sever-al equal segments by the PMF algorithm.The correlation value is calculated for each segment of the signal,and three groups of correla-tion results with the same phase will appear;Finally,the dual threshold Tong detection algorithm is used to detect the correlation re-sults calculated by the PMF algorithm to capture the B1I signal.The simulation results show that the algorithm can effectively improve the detection probability and reduce the detection time when capturing the Beidou B1I signal,and improve the speed of capturing the B1I signal.关键词
B1I信号/匹配滤波/双门限Tong检测/信号捕获Key words
B1I signal/Matched filtering/Double threshold Tong detection/Signal acquisition分类
信息技术与安全科学引用本文复制引用
刁彦华,徐亚丽,王晓君,刘昊昱..PMF+双门限Tong检测的北斗B1I信号捕获算法[J].通信与信息技术,2024,(2):1-5,5.
