基于自适应滤波算法的伪码捕获研究与改进

针对直接扩频伪随机噪声码序列的捕获,本文提出一种改进的自适应滤波结构.该结构采用2个不同算法的并行滤波器,根据最小均方误差准则动态调整滤波器权值,达到了加快伪码捕获系统收敛速度、提高稳态性能的效果.分析和仿真证明该方案捕获时间短、结构简单有利于硬件实现.

Research and improvement of the adaptive filter algorithm in code acquisition

An improved scheme was proposed for pseudo-random noiee code acquisition of DS-SS signals based on adaptive fdters. The system dynamically adjusted the weights of two parallel filters that used different least mean square error algorithms, and achieved faster convergence and a better steady state performance Analysis and simulations demonstrated that the proposed scheme had less acquisition time, and its structure was simple, which can implement easily in hardware.