Auto-test device for the transmission and reception system of a

Details Auto-test device for the transmission and reception system of a Auto-test device for the transmission and reception system of a

1998-04-10

1999-08-31

Pihulic, Daniel T.

Communications: directive radio wave systems and devices (e.g.,

Testing or calibrating of radar system

G01S 740

Patent

active

059459425

ABSTRACT:
An auto-test device for a radar includes at least one transducer located in the field of radiation of the radar microwave transmission, the transducer being configured to intersect a part of the radiated energy and to send it back to a receiver so as to create, in the receiver, a test signal modulated by beats of the transducer. The device further includes a synchronism mechanism configured to excite the transducer in synchronism with a sub-multiple of the frequency of sampling of a reception signal. The transducer is placed such that the receiver receives a test signal with a mean value close to zero.

REFERENCES:
patent: 3935573 (1976-01-01), Johnson
patent: 4203113 (1980-05-01), Baghdady
patent: 4656481 (1987-04-01), Mawhinney
patent: 5841392 (1998-11-01), Kishimoto
Patent Abstract of Japan, vol. 18, No. 189, (P-1721), Mar. 31, 1994 and JP 06 003171 A, Jan. 11, 1994.
Patent Abstract of Japan, vol. 97, No. 8, Aug. 29, 1997 and JP 09 101145 A, Apr. 15, 1997.

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