GPS数据分析，系统误差分析，基准。
从系统的跟踪算法中导出目标跟踪系统误差分析模型。
The target tracking system errors analysis models are derived from the tracker algorithm.
给出了系统误差分析及结果数据，经实验，系统稳定可靠，精度高。
The system error analysis and result data is given. The system is steady and reliable by experiment .
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