Method and device for the elimination of the intermediate frequency fixed echoes in a coherent pulse radar
US5576712A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Apr 20, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/5244
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The device for the elimination of intermediate frequency echoes from fixed targets carries out the cancellation of the echoes from the fixed targets by the storage, in the form of amplitude and phase samples, of the response to the first pulse of a burst reduced to video band, the synthesis on the basis of these samples of an intermediate frequency replica of the response to the first pulse of a burst and the subtraction of the synthesized replica from each of the subsequent pulses of the burst. It is of the double cancellation type, the preparation of the replica being done in two steps, a first rough-working step in which a rough replica is prepared and a second refining step in which the modelling error of the rough replica is taken into account.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.