In order to improve the signal capture accuracy of signal receivers under high dynamic and low signal-to-noise ratio,this article starts from the classic digital matching filtering algorithm and studies capture algorithms based on frequency domain partitioning and FFT.Considering the accumulation of pseudocode phase offset caused by pseudocode Doppler over time,this article proposes an estimation and compensation method for pseudocode frequency offset.This includes parallel capture methods based on uncertain domain partitioning and direct estimation of pseudocode frequency offset to reduce the impact of pseudocode phase shift on signal acquisition.Research on pseudocode capture algorithms to reduce residual pseudocode phase bias effects,further improving the performance of signal receivers in high dynamic and low signal-to-noise ratio environments,and providing support for improving the application performance of spread spectrum receivers in complex scenarios.
关键词
高动态/低信噪比/信号接收机/信号捕获
Key words
high dynamics/low signal-to-noise ratio/signal receiver/signal capture
维普
万方数据