Anti-jamming device for a radar provided with a reflector antenna
US5008677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1977 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Jul 7, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reflector of an antenna in a radar system subject to jamming carries a multiplicity of localized phase shifters which are sequentially controlled by a processor to introduce certain phase modifications into incoming signals reflected toward an associated radiator. The processor, operating on branched-off portions of the incoming signals, compares the magnitudes of the signals received in the several operational states of each phase shifter and maintains that operational state for which the signal level is at a minimum. The comparisons may be carried out on signals received at the end of a signal-transmission cycle, lacking a useful component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.