Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system – Receiver
Patent
1985-05-08
1987-11-24
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
Receiver
342162, 342195, G01S 766
Patent
active
047092360
ABSTRACT:
An arrangement for selecting between different doppler filter pairs having response characteristics optimized for ground clutter or moving rain clutter rejection. The selecting process detects the amplitude and mean doppler of the received radar echoes. The filter which is optimized for rain clutter rejection is normally used until clutter amplitude is detected above a predetermined value and the mean doppler is detected as being equal to or near zero. When such a detection is made, the filter optimized for ground clutter rejection is selected. Portions of the selecting device allow for the selection to be determined over several samples rather than switching the filters in each sample or coherent processing interval. Another portion of the circuitry changes the predetermined values which must be exceeded for a selection of the ground clutter filter, thereby preventing another filter change with only a small change in detected amplitude or mean doppler.
REFERENCES:
patent: 3721978 (1973-03-01), Doggett, Jr.
patent: 3761922 (1973-09-01), Evans
patent: 3775768 (1973-11-01), Lisle et al.
patent: 3898654 (1975-08-01), Vehrs, Jr.
patent: 3946382 (1976-03-01), Kossiakoff et al.
patent: 3990076 (1976-11-01), Naidich
patent: 4028697 (1977-06-01), Albanese et al.
patent: 4339754 (1982-07-01), Hammers et al.
Gregory Bernarr Earl
Lenart R. P.
Tubbesing T. H.
Westinghouse Electric Corp.
LandOfFree
Selectable doppler filter for radar systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Selectable doppler filter for radar systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selectable doppler filter for radar systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2424826