Communications: directive radio wave systems and devices (e.g. – Directive – Including a radiometer
Patent
1998-06-23
1999-12-07
Hellner, Mark
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a radiometer
250332, 2503361, G01S 302
Patent
active
059991224
ABSTRACT:
A photographic camera (10) that generates still photographs or images of a scene by detecting millimeter-wave radiation (16). The camera (10) includes an imaging lens (14) that collects the millimeter-wave radiation (16) and focuses the radiation on a plurality of receiver modules (32) positioned in the focal point of the lens (14) where each receiver module (32) includes a plurality of direct detection millimeter-wave receivers (36). In one embodiment, the plurality of receiver modules (32) are mounted on a single sensor card (28), where the receiver modules (32) on the card (28) are aligned in one direction. Each receiver (36) includes detector circuitry that detects the radiation of a pixel in the scene. Electrical signals from the receiver modules (32) are sent to a processing unit (38) on the sensor card (28). In one embodiment, the radiation (16) collected by the lens (14) is directed to a scanning mirror (18) that scans across the scene at a predetermined rate to generate the entire image. Alternately, the sensor card (28) can be moved relative to the mirror (18) to provide scanning of the image.
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Fornaca Steven W.
Shoucri Merit M.
Yujiri Mikio L.
Hellner Mark
TRW Inc.
Yatsko Michael S.
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