Radar beacon apparatus

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

325116, G01S 956

Patent

active

041298683

ABSTRACT:
A radar beacon apparatus to be used in conjunction with a search radar during emergency rescue operations. The radar beacon apparatus includes a receiving unit for receiving and detecting a radar pulse wave; a gate signal generating unit for generating upon the detection of a radar pulse wave a gate signal having a specific time interval; a transmitting unit for transmitting a frequency modulated signal which linearly and repetitively changes frequency over a predetermined frequency band during the time interval of the gate signal; and a display unit for displaying the reception of a radar pulse wave. The frequency sweep of the FM signal transmitted by the radar beacon completely covers and overlaps the receiver bandwidth of a comparable search radar, with each beacon transmission having an identical phase and frequency characteristic with respect to prior beacon transmissions. In an emergency situation, the beacon FM transmission produces multiple frequency incursions within the bandpass of the search radar receiver. Due to the constant phase and frequency relationship of these incursions, they are detected and integrated by the search radar to produce a bright display indicative of the position of the radar beacon apparatus. Also, in one embodiment, under normal circumstances the radar beacon operates as a search radar with the beacon transmitter muted while the beacon apparatus displays received radar pulses.

REFERENCES:
patent: 2907999 (1959-10-01), Wadley
patent: 3391404 (1968-07-01), Vogelman
patent: 3546695 (1970-12-01), Freedman
patent: 3967202 (1976-06-01), Batz

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Radar beacon apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radar beacon apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radar beacon apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-833683

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.