Secondary radar responders

Details Secondary radar responders Secondary radar responders

1980-12-31

1983-10-25

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 1380

Patent

active

044122195

ABSTRACT:
The invention relates to secondary radar responders which provide a reply in response to a radar signal received from a primary radar transmitter. The frequency of the received radar signal is monitored by the responder and the frequency of the response is brought into agreement therewith so that the response can be received by the primary radar transmitter at its transmission frequency. The invention is particularly applicable to marine radar systems and the responder may form part of a racon or transponder.

REFERENCES:
patent: 3183441 (1965-05-01), Francis et al.
patent: 3241137 (1966-03-01), Smoll
patent: 3524201 (1970-08-01), Land, Jr.
patent: 3566234 (1971-02-01), Thomson
patent: 3636453 (1972-01-01), George
patent: 4005418 (1977-01-01), Gorwara
patent: 4017856 (1977-04-01), Wiegand
patent: 4047171 (1977-09-01), Fugit

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