Radar receiver and method of indicating range to a radar source

Details Radar receiver and method of indicating range to a radar source Radar receiver and method of indicating range to a radar source

1978-05-19

1980-01-08

Bookbinder, Marc E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340552, 340691, 343 18E, 343112D, H04B 116

Patent

active

041829905

ABSTRACT:
A radar receiver for indicating the presence of a source of microwave energy includes an antenna, a modulation oscillator and modulator diode, a detector diode connected to bandpass amplifier stages, a peak detector providing a signal proportional in level to the received microwave energy signal strength, and a voltage controlled oscillator (VCO) connected to the peak detector and having a frequency in proportion to the peak detector signal level, the frequency of the VCO being an indication of range from a source of radar and a change in frequency being an indication of a rate of approach thereto. The VCO controls a transistor switch, and alarm output devices are connected through the transistor with alarm power sources, whereby an alarm signal activates the output device at a frequency related to the microwave signal strength. A comparator is connected in parallel to the VCO and triggers in response to a selected level of the peak detector signal to provide a steady level signal which closes the transistor switch and effects a steady alarm to indicate a selected range from the radar source.

REFERENCES:
patent: 2545503 (1951-03-01), Tucker
patent: 3366958 (1968-01-01), Seaborn
patent: 3389392 (1968-06-01), Stauffer et al.
patent: 3636641 (1972-01-01), Daskam
patent: 3660844 (1972-05-01), Potter
patent: 3717858 (1973-02-01), Hadden
patent: 3965425 (1976-06-01), Peterson et al.

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