Method of detection in bistatic mode using non-cooperative passive radio transmissions
US7859463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2006 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | May 12, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/582
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to the field of electromagnetic detection systems operating in bistatic mode, in particular to UHF/VHF bistatic radars. The method according to the invention consists in the simultaneous use of signals transmitted by one or more transmitting sources on separate frequency channels. The method includes a step of multichannel reception and separating channels. Additionally, the method includes a step of analysis of the signals received channel by channel, wherein the analysis is performed by correlation of the signals received with copies of the time and frequency shifted reference signals. The reference signals are constituted by the signals received from transmitting sources by direct transmission with a step of integration of the signals analysed, channel by channel, and a step of detection. The method according to the invention enables a signal to be used whose band-width is equal to the band covered by the set of channels used, which improves the contrast and distance resolution of the system implementing said method compared with the systems known from prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.