基于PMF-FFT的北斗B2a信号捕获算法研究
Research on Beidou B2a signal acquisition algorithm based on PMF-FFT
刁彦华 1李凯丽 1姚远 1王晓君1
作者信息
- 1. 河北科技大学,河北石家庄 050018
- 折叠
摘要
为了对北斗三号B2a信号进行快速且准确地捕获,提出了一种基于PMF-FFT的捕获算法.首先,通过建立数学模型,分析了PMF-FFT算法的特性;然后,对PMF分段长度、FFT运算点数、相关积分时间、非相干积分次数和判决门限等参数的选取进行了详细地分析;最后,利用Matlab工具对PMF-FFT捕获算法性能进行了仿真与分析,验证了算法的有效性,为算法的实现解决了首要问题.
Abstract
In order to acquire the B2a signal of Beidou-3 quickly and accurately,an acquisition algorithm based on PMF-FFT is proposed.Firstly,the characteristics of PMF-FFT algorithm are analyzed by establishing mathematical model.Then,the selection of pa-rameters such as PMF segment length,FFT operation points,correlation integration time,incoherent integration times and decision threshold are analyzed in detail.Finally,Matlab is used to simulate and analyze the performance of PMF-FFT acquisition algorithm,which verifies the effectiveness of the algorithm and solves the primary problem for the implementation of the algorithm.
关键词
B2a信号/捕获/PMF-FFT/捕获算法性能Key words
B2a signal/Acquisition/PMF-FFT/Acquisition algorithm performance引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据