Television – Responsive to nonvisible energy – Infrared
Patent
1997-07-31
1999-12-07
Chin, Tommy P.
Television
Responsive to nonvisible energy
Infrared
348169, 348 33, 2503381, 2503418, 342 53, H04N 533, H04N 5225, H04N 964
Patent
active
059992123
ABSTRACT:
A detection system for detecting a target flying over water, which includes a detector positioned to receive radiation reflected by the target off water, and producing a detector output signal having an amplitude proportional to the amount of received radiation, a high-pass filter for passing portions of the detector output signal having a frequency greater than a prescribed threshold frequency, and for blocking portions of the detector output signal having a frequency lower than the prescribed threshold frequency. The prescribed threshold frequency is sufficiently high to ensure that only the portions of the detector output signal produced by the radiation reflected by the target off the water are passed by the high-pass filter, and that portions of the detector output signal produced by solar glitter are not passed. In a specific embodiment, the system is designed to be installed on a ship for the purpose of detecting low-flying, fast-moving targets, such as cruise missiles.
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Crosby Holmes
Wardlaw Michael J.
Bechtel, Esq. James B.
Chin Tommy P.
Diep Nhon T.
The United States of America as represented by the Secretary of
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