Computed-interferometry radar system with coherent integration
US4992796A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/0227
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a radio-frequency radar system, a radar antenna (12) irradiates a region to be monitored, and antenna elements (14a-p) arrayed irregularly about a mobile platform (10) receive the resultant echo signal, which mixers (18 and 21) translate in frequency, coherently with the transmitted signal, to a lower frequency, at which a sample-and-hold circuit (24) can sample it. A beam-forming operation is performed on the sample signals by employing coefficients that have been computed from calibration readings taken by the elements mounted on the platform. The beam signals resulting from numerous successive transmitted pulses are then integrated coherently to produce an output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.