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

无源定位的一些仿真代码，包括时TOA、TDOA、DOA、RSS。2维的线性、非线性、极大似然算法和克拉美罗下界、均方误差的代码-Passive targeting some simulation code, including when TOA, TDOA, DOA, RSS. Two-dimensional linear, nonlinear, maximum likelihood algorithm and Cramer-Rao lower bound, mean square error