Monopulse FM-CW radar system with improved axis stability

Communications: directive radio wave systems and devices (e.g. – Determining direction – Monopulse

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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.

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