摘要
针对BOC(Binary Offset Carrier)调制信号的相关特性,结合带通信号欠采样技术,对BOC调制信号的直接捕获算法进行仿真,并在不同信噪比下对算法的性能进行分析。仿真结果表明,带通欠采样条件下的BOC调制信号捕获算法在较低信噪比下能有效的对BOC调制信号进行捕获。由于降低了采样频率,减少了处理数据量。
An algorithm was simulated and researched for direct acquiring PRN code based on the technology of bandpass signal sub-sampling, utilizing the auto-correlation characteristic of the long period PRN code in BOC modulation. With decreasing Signal-to-Noise, the algorithm is simulated and its performance was analyzed. The validity of the algorithm with the lower SNR was proved by simulation result under bandpass sub-sampling. The number of computing data is much less, because of the lower sampling frequency.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2010年第6期1512-1515,1523,共5页
Journal of System Simulation
基金
国家自然科学基金(60802031)
辽宁省创新团队计划
关键词
信号捕获
带通欠采样
BOC调制
PRN码
仿真
signal acquiring
bandpass sub-sampling
binary offset carrier modulation
pseudo random noise code
simulation
