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

作　　者：刁彦华[1] 李凯丽 姚远 王晓君[1] DIAO Yanhua;LI Kaili;YAO yuan;WANG Xiaojun(Hebei University of Science and Technology,Shijiazhuang 050018,China)

机构地区：[1]河北科技大学,河北石家庄050018

出　　处：《通信与信息技术》2024年第4期89-96,共8页Communication & Information Technology

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。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 

分 类 号：TN967.1[电子电信—信号与信息处理]