VIP doppler filter bank signal processor for pulse doppler radar
US4137532A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Apr 29, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/225
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.