Patent ID: 7940205
Filing Date: 2011-05-10
Classification: G01S

Abstract:
1. A method of using a radar to detect a known target likely to be positioned at approximately a predetermined height, close to other targets positioned at approximately the predetermined height, the method comprising the steps of: scanning in azimuth to detect a first unknown target, to produce a first distance measurement corresponding to a distance to the detected first unknown target, and to produce an azimuth angle θaz as an azimuth angle to the detected unknown target, the step of scanning in azimuth forming a first phase of detection; calculating an elevation angle θEL corresponding to an object situated at said first distance and at the predetermined height; searching at the elevation angle θEL and at the azimuth angle θaz for a second unknown target at a second distance, the step of searching at the elevation angle θEL and at the azimuth angle θaz forming a second phase of detection; and comparing the second distance to the first distance measurement, to detect the known target if the second distance is approximately equal to the first distance measurement.