北斗／惯导深组合系统捕获与环路控制研究

为适应我国对北斗卫星日益广泛的应用和用户对于高精度、强干扰能力下的应用需求，提出了一种北斗／惯导深组合系统捕获与环路控制方案；通过6 ms并行码相位搜索捕获方法成功捕获卫星，同时利用惯导与接收机环路的高度耦合机制实现载波环和码环的控制；通过仿真试验表明：该方法能够成功实现北斗卫星信号的捕获与接收机环路控制，且跟踪性能优于传统接收机环路。

Study on Capture and Loop Control of Deeply BD/INS Integrated System

In order to meet the demands of the increasingly wide applications of Beidou and the require-ments of the users for high accuracy and strong interference ability,a method of capture and loop control for deeply BD/INS integrated system was proposed.Search method used 6 ms parallel code phase was used to capture the satellites successfully,and the carrier and code loop were controlled by the highly coupling between tracking loop and INS navigation system.The simulation results indicate that this method can cap-ture the Beidou signal and control the tracking loop,and the tracking performance is superior to the tradi-tional receiver loop.