Systems for surveillance using airborne platforms as receiving platforms for bistatic radars
US10574338B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 2019 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Apr 30, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system comprises a ground hub and a mobile airborne platform hovering over or close to a coverage area on or near the earth surface. A bistatic radar receiver on the airborne platform includes a first antenna system to capture reflected radiofrequency signals originated from a satellite via reflected paths from the coverage area; and a second antenna system to transmit the reflected radiofrequency signals to the ground hub via a feeder link. At the ground hub, a multibeam antenna system receives the reflected radiofrequency signals and captures radiation signals directly from the satellite via a direct path; and a remote beam forming network remotely forms receiving beams for the first antenna system. A remote radar processing center includes a cross-correlator to receive the reflected radiofrequency signals and the radiation signals as two input signal streams, perform cross-correlations between the two input signal streams, and output an output signal stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.