该程序通过PN码来实现无源定位的功能，有三个基站，分别计算目标距三个基站的时间，从而得出目标的坐标-the procedures adopted to achieve the PN passive positioning functions, the three base stations, Goals were calculated from the three base stations, thereby reaching the target coordinates

利用D-S证据理论进行数据融合，应用场景为无线传感器网络目标定位，决策级融合-DS evidence theory data fusion, wireless sensor network application scenarios targeting, decision level fusion