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US 5,334,980 AGranted
Method and system for sharpening impulse response in a synthetic aperture radar
AssigneeWestinghouse Electric Corp.
InventorMartin J. Decker
Life of this patent
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Abstract
A synthetic aperture radar system performing two dimensional monopulse measurement of the return data.
Claims12
A method of sharpening impulse response of synthetic aperture return data of a synthetic aperture radar system, comprising:
- collecting computed range and azimuth return data;
- forming three apertures of the collected computed data, one of the three apertures generating data corresponding to SUM weighting in range and azimuth, a second of the apertures generating data corresponding to SUM weighting in range and DELTA weighting in azimuth, and a third of the apertures generating data corresponding to SUM weighting in azimuth and DELTA weighting in range;
- transforming the generated data in each of the three apertures into a two dimensional map format;
- performing two dimensional monopulse measurement of a combined transformed generated data in the map format, having bins corresponding to range and azimuth;
- calculating the DELTA data in range and the DELTA data in azimuth for each of the bins;
- and
- displaying the return energy in the individual range and azimuth bins in accordance with a monopulse measurement ratio of the SUM data of the range and the DELTA data of the range in the range bins and a ratio of the SUM data of the azimuth and the DELTA data of the range in each azimuth bin.
4 more elements
A synthetic aperture radar system, comprising:
- means for collecting complex range and azimuth return data during each look of the synthetic aperture antenna;
- means for storing the collected data in three memories;
- means including the three memories including the three memories for generating data corresponding to sum weighting in range and azimuth, sum weighting in range and delta weighting in azimuth, and sum weighting in azimuth and delta weighting in range;
- means for transforming the generated data in each of the three memories into a two dimensional map format;
- means for performing two dimensional monopulse measurement of combined transformed generated data in the map format, the map format including bins corresponding to range azimuth;
- means for calculating the DELTA data in range and the DELTA data in azimuth for each of the bins;
- and
- displaying the return energy in the individual range and azimuth bins in accordance with the ratio of the SUM data in range and the DELTA data in range in the range bins, and a ratio of the SUM data in azimuth and the DELTA data in range in each azimuth bin.
5 more elements
Dependencies are inferred from the claim text.