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

关于室内定位的算法，该算法是在MATLAB环境下的程序。-Positioning on the interior of the algorithm, which are in the MATLAB environment procedures.