Method of characterization of an overflown ground from a FM/CW radio altimeter signal
US6255982A · kind A · utility
6Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/935
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention proposes a novel method for using the signals provided by an airborne FM/CW radio altimeter, allowing to perform an analysis of the ground overflown by an aircraft for the purpose of, for example, identifying it, or alternatively of recognizing it. The method of the invention consists in analyzing, in the frequency domain, the shape of the spectrum of the beat signal generated by said radio altimeter to characterize said ground so as to extract from it information relating to the reflectivity of said ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.