Title: VIP doppler filter bank signal processor for pulse doppler radar

Abstract: A low PRF pulse doppler radar system utilizing a VIP digital filter bank signal processor to suppress echoes from terrain, rain, and chaff, and pass echoes from aircraft moving at higher speeds is disclosed. Each of a plurality of VIP filters individually provides high attenuation to undesired signals over designated frequency bands, the width of which are a large fraction of 1/T.sub.av where T.sub.av is the average interpulse period. Little or no attenuation of desired signals having doppler frequencies greater than 1/T.sub.av occurs. The outputs of the plurality of filters are desensitized to prevent false alarm from clutter, and the presence of a desired radar pulse echo is determined by a comparison with a threshold level.

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Inventors: Taylor, Jr., John W. (Baltimore, MD, US)
Martin, Raymond G. (Ellicott City, MD, US)

Application Number: 792279
Filing Date: 1977-04-29
Publication_date: 1979-01-30
Assignee: Westinghouse Electric Corp. (Pittsburgh, PA)
Primary Class(es): 342/93 342/137, 342/162, 342/194
Other Classes:
US Patent Ref:

3343162	Jan, 1967	Evans	343/7.
3404399	Oct, 1968	Eschne, Jr.	343/7.
3480953	Nov, 1969	Shreve	343/7.
3560972	Feb, 1971	Taylo, Jr.	343/7.
3566402	Feb, 1971	Taylo, Jr.	343/7.
3787851	Jan, 1974	Hughes	343/17.
4057800	Nov, 1977	Ganz	343/17.

Other Refs:
Primary Examiner: Wilbur, Maynard R.
Assistant Examiner: Goodwin, Lawrence
Attorney: Patterson; H. W.