Super-angular and range-resolution with phased array antenna and multifrequency dither
US8466829B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2010 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Jun 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radar system comprises an electromagnetic transmitter and an array of antenna elements connected in Multiple-Input Multiple-Output manner for routing signals reflected from the target to a plurality of receive beam rotation processors. The receive beam rotation processing for each antenna element includes application of rotation frequency offsets to the received signals and summation in summing and differencing adders to generate I and Q components of the rotating beams. The I and Q components for each element are summed to generate received signals including angle-or-arrival (AOA) information. The AOA information is further processed by correlating with reference replica AOA signals and by averaging to determine the actual AOA. The transmitter may have multiple contrarotating beams generated by application of frequency offsets. The transmit and receive beam rotations may be synchronized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.