Object sensing apparatus

Communications: directive radio wave systems and devices (e.g. – Testing or calibrating of radar system – By monitoring

Reexamination Certificate

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Details

C342S070000, C342S118000, C342S128000, C342S165000, C342S175000, C342S195000

Reexamination Certificate

active

11401753

ABSTRACT:
While an FM-CW mode for sensing an object, in which a frequency of an electromagnetic wave transmitted from a transmission/reception antenna6is continuously modulated, and also, a CW mode for judging an abnormal condition, in which the frequency of the electromagnetic wave to be transmitted from the transmission/reception antenna6is not modulated are switched, an abnormal condition judging section judges an abnormal condition when a signal level of a reception signal of the FM-CW mode is smaller than, or equal to a first judging threshold value, and also, a signal level of a reception signal in the CW mode is smaller than, or equal to a second judging threshold value which is higher than the first judging threshold value.

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patent: 6278399 (2001-08-01), Ashihara
patent: 6369747 (2002-04-01), Ashihara
patent: 6414623 (2002-07-01), Ashihara
patent: 6414628 (2002-07-01), Ashihara
patent: 6611227 (2003-08-01), Nebiyeloul-Kifle et al.
patent: 6825799 (2004-11-01), Isaji
patent: 6831595 (2004-12-01), Isaji
patent: 7057550 (2006-06-01), Aker
patent: A-04-105086 (1992-04-01), None
patent: 3488610 (1999-06-01), None
patent: A-11-166973 (1999-06-01), None
patent: A-2001-166035 (2001-06-01), None
patent: A-2004-264258 (2004-09-01), None

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