With good concealment, the locating and tracking system based on azimuth measurement is an effective means of counter reconnaissance, anti-jamming and surprise attack.In view of the locating demand to ground moving target by ground observation stations, the target models of uniform and uniform-acceleration rectilinear motion are established.In order to reduce the influence of angle measurement error, the target locating algorithm is derived according to the least square estimation criterion.The main factors affecting the locating accuracy are analyzed, and the simulation experiments and numerical analysis are carried out from aspects of the number of observation stations, target distance and angle measurement error.The mean and standard deviation of locating error are analyzed by using Monte Carlo method.The calculation results show that under the same conditions, better locating accuracy can be obtained by using three to four ground observation stations.The locating error and error dispersion degree increase with the increase of target distance and angle measurement error.The experimental results have certain reference significance for optimizing the configuration of ground observation stations, improving the accuracy of target locating and evaluating the expected results of equipment quantitatively.