基于直扩技术的角跟踪设计与实现

Design and Implementation of Angle Tracking Based on Direct Sequence Spread Spectrum

提出了一种基于单通道单脉冲的直接序列扩频信号的角跟踪的设计方案。分析了扩频系统的角跟踪工作原理,用中频信号模拟射频信号对系统模型进行简化,并基于这一模型进行理论分析。结合实际应用进行了专题试验,采用了一种用伪码遍历代替相关解扩进行角误差信号搜索的方法,并对伪码的搜索、捕获和跟踪的实现过程进行了详细设计,实现了扩频信号角误差信号的搜索和跟踪功能。

A new scheme for the angle tracking based on single channel and monopulse direct sequence spread spectrum signal is introdueed, First, the principle of spread spectrum system angle tracking is analyzed, and then the spread speetrurn tracing signal is simulated by IF signal to simplify the system model, and then theoretical analysis is performed based on the model. In the end, a special experiment is implemented according to actual applications, using pseudorandom code ergodicity instead of related dispreading in searching angle error signals, and realization process of pseudo-code search, capture and tracking process is designed in detail, and the function of searching and tracking the spread speetnam angle error signal is realized.