再生伪码测距中的码跟踪环实现

A realization of code tracking loop in PN code ranging

在再生伪码测距中,码跟踪环的设计是伪码测距系统的关键设计环节。根据CCSDS发布的伪码测距绿皮书,介绍了一种新型的码跟踪环的实现方式。通过对环路参数的分析,详细阐述了码片跟踪环中关键功能模块和关键参数的设计方法。以T2B码为例给出了仿真测试结果,验证了分析和设计的有效性,可用于深空探测应答机和高灵敏通信机。

The design of code tracking loop is the key point in the regenerative PN ranging system. A new code tracking loop is presented according to the Green Book published by CCSDS. Through the analysis of the parameters of the loop, the method of designing the key function model and key parameters of the chip tracking loop is expounded in detail. Simulations are given by taking T2B code as an example. The analyses and design are verified to be effective, and can be applied to the deep space transponder and high sensitive communication equipment.