Synthetic-aperture-radar apparatus and method for production of synthetic-aperture-radar images of moving objects
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United States of America Patent
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Jan 17, 2017
Grant Date -
Dec 11, 2014
app pub date -
Dec 28, 2012
filing date -
Dec 29, 2011
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Abstract
A SAR apparatus including: a radar transceiver to emit electromagnetic pulses and to provide a radar signal in response to echoes of the electromagnetic pulses; and a processing unit, configured to produce SAR images of moving objects from the radar signal. The processing unit includes: a first processing module to apply translational motion compensation to a central reference point of a moving object in a subaperture of the radar signal; a second processing module, to execute phase compensation with the single central reference point as reference; and a third processing module to apply phase compensation to the radar signal as a function of an estimated phase component the auxiliary point and of a normalization parameter to a distance in range between the central reference point and the auxiliary point.
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