摘要
针对BDS RNSS B3频点信号的工作带宽、调制方式、伪码速率等信号格式的特性,采用基于FFT并行码相位捕获方法实现对BDS B3频点信号捕获的设计研究。通过详细的理论推导分析相干积分时间、非相干积分次数、门限设定等关键参数对信号捕获性能的影响,利用MATLAB软件对B3频点信号的捕获方案进行仿真分析,给出不同参数下捕获性能的仿真结果。设计方案的理论研究与仿真结果的高度一致,对推广BDS应用具一定的参考意义。
According to the RNSS BDS B3 frequency point signal characteristics of its operating bandwidth, modulation mode, pseudo code rate, design using FFT-based parallel code phase acquisition method to achieve the acquisition of BDS B3 frequency signal. Through detailed theoretical derivation to analysis the coherent integration time, non-coherent integration times, threshold setting and other parameters have produced the influence for capture Performance. At the same time using the MATLAB software to simulate the capture procedure of BDS B3 frequency point signal, simulation results are listed capture performance under different parameters. The simulation results are consistent with the Program theory design have the impor- tant meaning for promoting BDS.
出处
《导航定位学报》
2015年第4期11-15,26,共6页
Journal of Navigation and Positioning
基金
河北省科技计划项目(14210309D)
