Using an S band radio interferometer for measuring the phase shift of radio waves coherently reflected from the sea surface
Article first published online: 7 DEC 2012
Copyright 1982 by the American Geophysical Union.
Volume 17, Issue 3, pages 635–642, May-June 1982
How to Cite
1982), Using an S band radio interferometer for measuring the phase shift of radio waves coherently reflected from the sea surface, Radio Sci., 17(3), 635–642, doi:10.1029/RS017i003p00635.(
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 18 JAN 1982
- Manuscript Received: 23 SEP 1981
An analytical study of the interference pattern formed over a sea surface by a coherent source of S band radiation is presented. Results of the theory of wave scattering by rough surfaces are employed to account for the effect of sea state on the interference pattern. The phase of the reflection coefficient for the coherent part of the reflected field is shown to cause a vertical shift of the interference pattern. This shift is utilized to develop interferometric techniques of reflection coefficient phase measurement based on a bistatic transmitter-receiver scheme. Also, a procedure for retrieving sea level information from interferometric measurements is proposed that is based on incorporating the phase shift measurements into a previously developed sea level measurement technique. The measured phase shift precision is estimated to be ±1°, corresponding to a ± 1-cm accuracy in sea level measurements.