Obstacle and terrain avoidance sensor
US7479920B2 · kind B2 · utility
34Cited by
40References
63Claims
0Family size
Inventor
Key dates
| Filing date | Dec 29, 2003 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Sep 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/935
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for terrain mapping and/or obstacle detection for aircraft, including (a) transmitting a non-scanning beam that illuminates the terrain and/or obstacles; (b) receiving a Doppler shifted signal that is Doppler frequency shifted by an amount dependent on an angle between a line of flight of the aircraft and scatterers that reflect the transmitted beam; (c) determining the angle from the Doppler frequency; (d) determining the range of at least some of said scatterers; and (e) determining the azimuth and elevation of the scatterers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.