一种干扰环境下PN码自适应捕获方法研究

The Study of an PN Code Adaptive Acquisition Method Under the Circumstance of Jamming

在分析窄带干扰抑制滤波器对PN码相关特性影响的基础上,采用最大似然估计准则得到等效高斯白噪声功率估计,由此提出干扰环境下PN码自适应捕获的判决门限设置方法,给出PN码捕获的自适应检测装置。最后通过计算机仿真证明该方法检测性能与理论值非常吻合,从而验证了其有效性。

Based on analyzing the effect of the interference suppression filters to PN code correlation, the power of the Gaussian noise is estimated according to the Maximum Likelihood （ML） criterion, and a threshold estimation method of PN code adaptive acqui- sition is proposed, and a PN code adaptive acquisition device was obtained. The computer simulation shows that the performance of the acquisition method is very close to the theoretical values, and the method is proved effective.