中文摘要：

跟踪环路优化主要针对于降低GPS接收机测量中的热噪声误差和动态应力误差。调节环路噪声带宽在大多数情况下是优化策略的首选,另外环路阶数对系统的动态应力误差也有着重要影响。首先分析了码环路在动态下的跟踪性能,在此基础上,选择环路阶数作为另一个重要的优化参数,提出一种同时调节环路阶数和带宽的环路优化策略。优化策略中研究了视距动态实时检测算法,并根据检测到的视距动态来调节环路阶数,以减少来自动态应力误差的影响;优化策略中还研究了在动态环境下根据测量误差最小原则实时调整环路噪声带宽算法的具体实现。最后应用该算法分别对高动态GPS模拟和仿真数据进行了实例验算,结果显示高动态环境下算法跟踪稳定,测量误差得到了明显改善。

英文摘要：

For a GPS receiver,the tracking loop optimization aims at decreasing thermal noise and dynamic stress error.Loop bandwidth adjustment is the principal strategy in the most instances.But considering the high dynamic environment,loop order is a concern for its significant influence on the dynamic stress error.Based on the analysis of the code tracking loop dynamic performance,loop order is selected as another important parameter needs to be optimized in the paper.In the algorithm,loop order is switched betwee...