Method and Apparatus for Increasing a Radar's Range With Improved Scan-to-Scan Integration of Doppler Filtered Signals.
Patent, Filed 22 Jun 90, patented 21 Apr 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
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Method and apparatus for improving detection ranges of a pulsed radar system wherein electromagnetic return signal data in range cell order is doppler filtered, digitized and stored in doppler memory channels over multiple scans of an azimuth. ne digital doppler data in each doppler memory channel is scan-to-scan integrated over a predetermined number of scans to produce target displays for each possible velocity. The target displays are stored in a velocity memory, which is partitioned into velocity channels, each velocity channel corresponding to one possible velocity. A selector selects the target display having the largest total magnitude as a display signal. The scan-to-scan integrated target displays are not subject to collapsing losses since only target signals plus noise signals will be stored in the doppler memory channel corresponding to the targets velocity.
- Active and Passive Radar Detection and Equipment