Patent ID: 8797206
Filing Date: 2014-08-05
Classification: G01S

Abstract:
1. A method comprising transmitting a signal in the form of pulses from a moving platform towards a plurality of moving targets during a duration; receiving at a first receiver device a first set of pulse returns back from the plurality of moving targets in response to the signal, wherein the first receiver device is fixed to the moving platform; receiving at a second receiver device a second set of pulse returns back from the plurality of moving targets in response to the signal, wherein the second receiver device is fixed to the moving platform; determining a first subset of the first set of pulse returns; determining a first subset of the second set of pulse returns; determining a second subset of the first set of pulse returns; determining a second subset of the second set of pulse returns; subjecting the second subset of the first set of pulse returns to a synthetic aperture radar imaging process to form a first set of a first modified plurality of data items; subjecting the second subset of the second set of pulse returns to a synthetic aperture radar imaging process to form a second set of a first modified plurality of data items; subjecting the combination of the first set and second set of the first modified plurality of data items to an along track interferometry process to form data for an image; subjecting the first subset of the first set of pulse returns to a space time adaptive processing to form a first set of a second modified plurality of data items; subjecting the first subset of the second set of pulse returns to a space time adaptive processing to form a second set of a second modified plurality of data items; and combining the data for the image and the first and the second sets of second modified plurality of data items to determine a plurality of positions one for each of the plurality of targets marking the plurality of positions, for each of the plurality of moving targets, on a map.