Location by position observing information tolerance synthesize

The existing location theories, passive or active, are all for the single target. In order to locate more than one undistinguished similar signal sources, Position Observing Information Tolerance Synthesize (POINTS) location method is presented in this paper. The new location method establishes information models based on measurements of data or parameters related to targets´ location, and makes full use of targets´ prior information and observed data´s statistical properties. POINTS location method can solve the problem of multi-target location which current single target location method can not solve. Take passive direction finding location of one moving station as an example to show the principle of PONITS location method. The results of experiments show that the POINTS location method has the ability to get the number of targets and locate the multi-target positions at the same time.