Patent Document ID: 20180003815
Application ID: 14563270
Patent Status: 0

Claim One:
1. A system for determining the location of a man-made object based upon symmetry of the object comprising: at least one of a transmitter and receiver combination or transceiver for emitting and receiving mixtures of polarizations and using receiving antennas with a specific polarization to thereby collect images from radar pulses, the receiver-transmitter mixtures of polarizations comprising horizontal-horizontal polarimetric images, vertical-vertical polarimetric images, vertical-horizontal polarimetric images and horizontal-vertical polarimetric images, at least one processor, the at least one processor configured to combine the horizontal-horizontal polarimetric images and vertical-vertical polarimetric images to form co-polarimetric images and operate on one or both of the vertical-horizontal polarimetric images and horizontal-vertical polarimetric images to form cross-polarimetric images; the at least one processor configured to process the co-polarimetric and cross-polarimetric images individually; each of the co-polarimetric and cross-polarimetric images comprising a plurality of incrementally selected pixels under test, the at least one processor configured to select a pixel under test and analyze the surrounding pixels to determine whether a manmade object is present; the at least one processor configured to perform spatial averaging using the cross polarimetric image by replacing the pixel under test and the pixels adjacent to the pixel under test with an average pixel value calculated from the pixel under test and pixels adjacent thereto; using the co-polarimetric image, the at least one processor configured to determine the intensity of the background of the pixel under test and the surrounding pixels in order to diminish the effect of background to produce clearer co-polarimetric and cross-polarimetric images; the at least one processor is configured to locate the left-right point of symmetry indicative of a man-made object by comparing each pixel under test in the cross-polarimetric image to pixels in the vicinity and if the intensity of the pixel under test differs by at least 3 dB, the pixel under test is determined to be a candidate pixel for locating a cross-range coordinate determinative of a point of symmetry indicating a man-made object.