河北省科学院学报

在载体旋转的情况下，传统接收机对导航信号跟踪性能下降，甚至无法正常工作。通过对旋转条件下导航信号的频率和相位变化进行计算与分析，本文提出一种新的导航信号跟踪方法，该方法在传统跟踪环路的基础上增设旋转跟踪环，实现对旋转载体转速的估算，借助转速信息实现信号的正常跟踪。经仿真验证，新环路的跟踪误差相较传统环路大幅减小。在信噪比为5 dB时，新环路的跟踪质量从传统环路的2.74提高到4.21,高于4.0的经验门限，表明新环路在复杂动态环境下具有更优的信号跟踪性能。

Carrier rotation leads to degradation in the tracking performance of conventional receivers, potentially causing malfunctions. Based on calculating and analyzing the frequency and phase variations of navigation signals under rotation, this study proposes a novel tracking method. The proposed method integrates a rotation tracking loop within a traditional tracking architecture to estimate the rotational speed of the rotating carrier, and employs this speed information to maintain normal signal tracking. Simulation results demonstrate a significant reduction in tracking error compared to the conventional approach. Specifically, at a signal-to-noise ratio of 5 dB, the tracking quality improves from 2.74 to 4.21, surpassing the empirical threshold of 4.0, thus highlighting the superior signal tracking performance of the new loop in complex dynamic environments.