For eliminating the limitations such as no single-location capacity of most photo-electric theodolites, and the restriction of station distribution due to using angular intersected method, radar tracking elements were induced and the fusion location algorithm of theodolites and radar associated measurement(TRAM) was put forward. According to the station distribution geometry, the equivalent range, which can locate singly associated with the angular of photo-electric theodolites, was determined. The computing results show that the difference in three directions by using two methods is not more than 30m. The precision determined by above-mentioned method, which corresponds to the location standard precision of photo-electric theodolites, is obviously superior. The fusion location algorithm of theodolites and radar associated measurement extends the way to data processing of exterior ballistic measurement and effectively improves the precision of trajectory.