Passive coherent location with a prediction of a broadcast signal

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United States of America Patent

PATENT NO 12015824
APP PUB NO 20220303622A1
SERIAL NO

17207402

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An apparatus for passive coherent location includes a forecaster, an evaluator, a receiver, and a correlator. The forecaster generates a prediction of a radio-frequency signal transmitted from an antenna of a broadcasting service. The evaluator generates an effectiveness metric from the prediction of the radio-frequency signal. The receiver receives the radio-frequency signal that an object reflects from the antenna to the receiver. The correlator determines, from the radio-frequency signal reflected from the object as received at the receiver, an ambiguity function having a maximum at a temporal offset and a Doppler shift. The temporal offset and the Doppler shift at the maximum partially determine at least a position of the object. The apparatus optionally includes a selector for tuning the receiver to the radio-frequency signal in response to the effectiveness metric.

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Patent Owner(s)

Patent OwnerAddress
UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVYONE LIBERTY CENTER 875 NORTH RANDOLPH STREET SUITE 1425 OFFICE OF NAVAL RESEARCH ARLINGTON VA 22203-1995

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chergui, Mohamed San Diego, US 1 0
Civerolo, Michael P San Diego, US 5 1
Fleizach, Gregory Knowles San Diego, US 7 2
Johnson, Nicholas T Pensacola, US 4 1
Lichtenberg, Christopher Carlsbad, US 2 0

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