Radar

Details Radar Radar

2006-03-03

2008-11-25

Gregory, Bernarr E (Department: 3662)

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

Testing or calibrating of radar system

By monitoring

C342S027000, C342S070000, C342S118000, C342S128000, C342S165000, C342S175000, C342S195000

Reexamination Certificate

active

07456781

ABSTRACT:
A radar includes a transmission section, a heterodyne reception section, a power supply section and a detection section. The transmission section emits a transmission wave to a target. The heterodyne reception section receives a reflected wave from the target. The power supply section supplies power to the reception section. A switching frequency of the power supply section is in synchronization with a local oscillation frequency of the reception section. The detection section determines that the switching frequency is out of synchronization with the local oscillation frequency when a certain peak frequency existing in an output signal of the reception section before a transmission state of the transmission section is changed still exists in the output signal of the reception section after the transmission state of the transmission section is changed.

REFERENCES:
patent: 4106016 (1978-08-01), Cerra et al.
patent: 5274380 (1993-12-01), Yatsuka et al.
patent: 5945941 (1999-08-01), Rich et al.
patent: 6664919 (2003-12-01), Isaji
patent: 6856283 (2005-02-01), Jacobson et al.
patent: 6963302 (2005-11-01), Arvidsson
patent: 7002512 (2006-02-01), Isaji
patent: 7183968 (2007-02-01), Isaji
patent: 7221309 (2007-05-01), Isaji
patent: A 2001-091631 (2001-04-01), None

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