Interference determination method and FMCW radar using the same

Details Interference determination method and FMCW radar using the same Interference determination method and FMCW radar using the same

2007-03-06

2007-03-06

Gregory, Bernarr E. (Department: 3662)

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

Testing or calibrating of radar system

By monitoring

C342S089000, C342S091000, C342S118000, C342S128000, C342S159000, C342S165000, C342S174000, C342S175000, C342S195000, C342S196000

Reexamination Certificate

active

11403995

ABSTRACT:
Occurrence of interference is detected using sampled amplitude data obtained by oversampling a beat signal. It is detected by comparing the absolute value (|VD|) of variation in the sampled data with a threshold value (TH). When interference occurs, a wideband signal is superposed on the beat signal, and this disturbs the signal waveform of the beat signal to drastically varies its amplitude. Therefore, occurrence of interference can be detected without fail regardless of the scheme on which a radar as the source of an interference wave is based and even when the amplitude of the interference wave is low. In addition, when low-frequency noise is superposed on the beat signal, erroneous detection of occurrence of interference can be prevented.

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