Dual-frequency, remote ocean-wave spectrometer
US4054879A · kind A · utility
99Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1976 |
| Grant date | Oct 18, 1977 |
| Priority date | — |
| Expiry date | Nov 19, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/415
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A coherent, dual-frequency, ocean wave spectrometer radar system for measuring the characteristics of ocean surface gravity waves includes: a transmitter for transmitting a pair of closely spaced, coherently related, microwave frequencies; a receiver for receiving and separating the radar-return signals of the dual-frequency channels; a frequency shifter for offsetting the doppler spectrum of each radar return signal; and a multiplier for multiplying the radar-return signals of the dual-frequency channels to obtain a Bragg resonance condition indicating the presence of a particular gravity wave frequency on the ocean surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.