【摘要】 在GPS通信系统的弱信号状态下,相关噪声的效应对系统的影响重大。利用最佳屏蔽二进序列偶(PPB-SP)良好的循环自相关特性和低相关噪声特性,把它引入到GPS系统中,代替原来的C/A码作为扩频伪码,建立一个GPS信号发生和信号捕获系统。对最佳屏蔽二进序列偶进行仿真分析,仿真结果表明,在使用最佳屏蔽二进序列偶的GPS系统中,有着良好的相关噪声和检测概率。更多还原

【Abstract】 The effect of correlation noise influences greatly the system in the weak signal state of GPS communication system.The better cyclic autocorrelation and low correlation noise characteristics of perfect punctured binary sequence pairs(PPBSP) are introduced into GPS system to replace the original C/A code as spread spectrum code and build a GPS signal generation and acquisition system.The simulation analysis is performed for PPBSP,and the simulation results show that the GPS system using PPBSP has better correlation noise and detection probability.更多还原