Analyze the three sources to obtain the track data, set forth the excellence of the sensor network in obtaining of track data, build up the level model of the blend of multisensor data fusion.3.

• 2．分析了轨迹数据获取的三个来源，阐述了传感器网络在轨迹数据获取中的优点，建立了多传感器数据融合的层次模型。