Electronic scanning radar apparatus, received wave direction estimating method, and received wave direction estimating program
US8907840B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2012 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Apr 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/931
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic scanning radar apparatus mounted on a moving object includes a receiver unit including a plurality of antennas receiving a received wave arriving from a target having reflected a transmitted wave, a beat signal generating unit generating a beat signal from the transmitted wave and the received wave, a frequency resolving unit resolving the beat signal into beat frequencies having a predetermined frequency bandwidth and that calculates complex data based on the beat signal resolved for each beat frequency, and an azimuth detecting unit estimating a wave number of the received wave based on singular values calculated from a matrix created based on the complex data calculated based on the beat signal and calculating a direction of arrival of the received wave based on coefficients calculated based on a pseudo-inverse matrix of the matrix included in a signal subspace determined by the estimated wave number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.