Accession Number : ADD004541

Title :   Stepped Dual-Frequency Ocean-Wave Spectrometer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Wright,John W ; Plant,William J ; Schuler,Dale L

Report Date : Oct 1977

Pagination or Media Count : 14

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. (Author)

Descriptors :   *Patents, *Oceanographic equipment, *Ocean waves, *Coherent radar, Ocean surface, Surface waves, Gravity waves, Radar signatures, Dual channel, Spectrometers, Remote detectors

Subject Categories : Physical and Dynamic Oceanography
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE