Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent
1990-06-22
1992-05-05
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
342 27, 342 29, 342 41, 342147, 342417, 342443, G01S 1393
Patent
active
051112108
ABSTRACT:
A microwave signal detector system provides a visual indication of the relative bearing of a remote source of microwave energy. An antenna for receiving said microwave energy includes a plurality of microwave-sensitive elements arranged in a planar circular array for receiving pulses from all azimuth directions. Each microwave sensing element is adapted to monitor energy received in a predetermined angular sectors and includes a horn element and a microwave energy responsive diode disposed within said horn element. The diode is connected as part of a voltage divider to develop a noise signal corresponding to the microwave energy received at each sector resulting from vibrations in the diode which occur at an audio frequency. The resultant developed noise signal is digitized and compared to a predetermined threshold to provide an output control signal when the developed signal exceeds the value of the threshold. The output signal drives an LED indicator. An LED corresponding to each sensing diode is arranged in a circular display to provide relative bearing information corresponding to the received signal. This system is particularly adapted to provide early warning of vessels in the vicinity so as to avoid possible collisions.
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Sotomayor John B.
Survival Safety Engineering, Inc.
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