Location error analysis of direction finding location system

With large detection range, working normally in the condition of electronic countermeasures, direction-finding location systems have attracted great interest of researchers. And a lot of people pay much more attention to passive location technique. But the emphasis of many researchers' work is passive location method, and the location error analysis of multiple passive sensors has received little attention until now. This paper studies the problem, and the minimum ambiguous location area is given. The relationship between the ambiguous location area and the bearing measurements of passive sensors (or the cut angle) is shown in simulation figures, and the positioning error distribution figure is also given. Some conclusions are drawn, which can be used for reference in collocating passive sensors to improve location precision.