Abstract: The existing passive or active location theory are all proposed for single objective orientation, which are unable to locate more than one undistinguished similar radiation sources, and the traditional bearing orientation method has false location faults. According to the problems, a novel location method for multi-target by position information field based on direction of arrival (DOA ) measurement information is presented in this paper. This location method can solve the problem of multi-target location which current single target location method unable to solve, and it can get target number and multi-target position at the same time. Computer experiments used three observation stations to locate two and three similar radiation sources, respectively, based on passive bearing orientation method, simulation results show that this method has the advantage of getting target number and multi-objective position at the same time, and it also can solve the problem of false location effectively in the traditional bearing orientation method.