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收集GPS数据并保存、轨迹回放的源程序。
GPS data collection and preservation, trajectory playback of the source.
对交通事故，特别是雷达覆盖区以外的事故，通过对AIS数据和航行轨迹的回放、分析和模拟实验，可以得到有价值的结论；
The valuable conclusion can be achieved by means of analyzing the AIS data, playback the ship trajectory and simulation experiments, especially to the accidents beyond the radar coverage.
时域分析包括时域波形回放、数字滤波、轴心轨迹分析、解调分析、趋势分析、相关分析。
The time field analysis module contains the timely wave return, digital filter, axis center track analyzing, demodulation analyzing, trend analyzing, mutual analyzing.
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