Stepped dual-frequency, ocean-wave spectrometer
US4053886A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1976 |
| Grant date | Oct 11, 1977 |
| Priority date | — |
| Expiry date | Nov 19, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A coherent stepped dual-frequency, ocean-wave, spectrometer radar system for measuring the characteristics of ocean-surface gravity waves includes: a transmitter for transmitting in successive steps coherently related pairs of frequencies having different, small, and known frequency separations; a coherent receiver for receiving and separating the radar returns of the stepped pairs of frequencies, a frequency-shifter for offsetting the doppler spectrum of each radar return, a multiplier for multiplying together the two frequencies of each pair for each step to obtain a Bragg resonance condition for each step; and a plurality of stepped detectors each for detecting a different step of said multiplier output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.