Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1974-10-23
1976-05-11
Tubbesing, T. H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 65LC, G01S 956
Patent
active
039567478
ABSTRACT:
A radar arrangement utilizes a rotating or pivotal antenna lobe and a primary radar device operating with a doppler evaluation system and a secondary radar device equipped with a rotating or pivotal antenna lobe wherein a certain time period (processing time) expires between the scanning of a recognized target by the lobe of the primary radar antenna and the recognition of this target during the target evaluation in the receiver of the primary radar device. A storage device is provided which captures the azimuth angle position of a target recognized by the primary radar receiver and interrogation signals of the secondary radar transmitter are triggered with the help of a control means associated with the storage device for a certain interrogation range only when the antenna lobe of the secondary radar device repeatedly approaches the target. The interrogation range is selected sufficiently large that a number of answer signals is triggered which suffices for the desired reply probability.
REFERENCES:
patent: 3328797 (1967-06-01), Jorna et al.
patent: 3343160 (1967-09-01), Beals et al.
Leypold Dieter
Maier Bruno
Siemens Aktiengesellschaft
Tubbesing T. H.
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