Communications: directive radio wave systems and devices (e.g. – Determining direction – Monopulse
Patent
1984-11-15
1987-04-07
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Determining direction
Monopulse
342169, G01S 1368
Patent
active
046564802
ABSTRACT:
The radar comprises in known manner a transmitter (1), a transmitting antenna (E.sub.1), two receiving antennas (R.sub.1,R.sub.2), mixers (6,7) and means for processing the subtractive beat signals supplied by the mixers for effecting detection of the bearing of a target (10) and of the range and/or the relative velocity of the target. According to the invention, a target simulator is provided to correct the phase errors of electrical and mechanical origins. The simulator comprises a transmission circuit including a modulator (11) and a simulated target echo transmission antenna (E.sub.2) which transmits towards the receiving antenna. The radar also includes means for processing a beat signal derived from the simulated echo and for effecting detection of the simulated target bearing and means for correcting phase errors.
REFERENCES:
patent: 3167768 (1965-01-01), Rosen
patent: 3221328 (1965-11-01), Isch
patent: 3883870 (1975-05-01), Kunz
patent: 3943514 (1976-03-01), Afendykiw et al.
Allezard Roland
Degouy Jean-Luc
Gregory Bernarr Earl
Kraus Robert J.
Tarcza Thomas H.
U.S. Philips Corporation
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