Dismount step discrimination with temporal adaptive matched filtering of doppler spectral features
First Claim
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1. A method comprising:
- generating an initial radar image corresponding to a received doppler profile of a target measured over a plurality of coherent processing intervals;
smoothing the initial radar image in doppler or time over the plurality of coherent processing intervals;
generating a matched filter corresponding to the smoothed initial radar image;
generating a matched filter signal from the matched filter;
generating a subsequent radar image; and
correlating the matched filter signal with the subsequent radar image to discriminate the target.
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Abstract
A process for detecting and discriminating a particular target, such as an ambulating human, amidst an environment crowded with other objects or humans having similar doppler profiles to the desired target. A method according to one embodiment includes generating an initial radar image corresponding to a received doppler profile of a target, and generating a matched filter signal corresponding to the received doppler profile. The matched filter signal is correlated with subsequently received radar images to detect and discriminate the target.
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Citations
8 Claims
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1. A method comprising:
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generating an initial radar image corresponding to a received doppler profile of a target measured over a plurality of coherent processing intervals; smoothing the initial radar image in doppler or time over the plurality of coherent processing intervals; generating a matched filter corresponding to the smoothed initial radar image; generating a matched filter signal from the matched filter; generating a subsequent radar image; and correlating the matched filter signal with the subsequent radar image to discriminate the target. - View Dependent Claims (2)
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3. A method comprising:
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generating an initial radar image corresponding to a received doppler profile of a target; generating a matched filter signal corresponding to the received doppler profile of the target; generating a subsequent radar image; and correlating the matched filter signal with the subsequent radar image to discriminate the target, wherein generating the initial radar image comprises; receiving and storing information corresponding to a doppler profile of radiation scattered off the target over a plurality of coherent arrays; and smoothing the information to reduce variations in the information in doppler or time. - View Dependent Claims (4, 5, 6, 7, 8)
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Specification