1. A method of determining the positions of a plurality of targets using only the bearings of the targets and in which true targets are distinguished from false targets, comprising the steps of: (A) viewing the targets with at least three bearing sensors, each of the sensors receiving a strobe from a true target along a line indicating the bearing of the true target, the bearing lines intersecting to form triangles indicating the positions of the true targets and of the false targets; (B) comparing the size and position of each of the triangles with preselected values to distinguish one set of triangles indicating true targets from another set of triangles indicating false targets including eliminating by integer programming those triangles in excess of one which lie along a single bearing line; and (C) calculating the positions of said one set of triangles using the bearing lines which define the triangles in said one set.