An intermediary method used in direction-finding location system

In order to deal with the NP hard in the usual direction-finding location, an intermediary techniques of data association for multiple targets tracking by multiple passive sensors are discussed. The location will be fulfilled at the assistant of a range finder. Firstly, employ one of a passive sensors equipped with the range finder in the tracking net, get an integrated measurement of the target; Secondly, translate the integrated measurement into the reference frame of the other sensors one by one, then use the translated measurement as the medium, pick up the ones associated with the translated one as a gather, Finally, let the orientation line in the gather crossed, and find the precision location though the least mean square. The simulation results show the excellent performance of the new direction-finding location method.