Upwind-Downwind Ratio of Radar Return Calculated from Facet Size Statistics of a Wind-Disturbed Water Surface
- 1 April 1962
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IRE
- Vol. 50 (4) , 456-461
- https://doi.org/10.1109/JRPROC.1962.288043
Abstract
A wind tunnel with water as a lower surface has been used to obtain experimental data on the statistical distributions of facet size in relationship to wind velocity, facet slope, and flatness tolerance. Flatness tolerance is defined as one-tenth of the radar wavelength. Using the above experimental data, calculations are presented which, for the first time, relate the upwind-to-downwind ratio of radar return with radar beam depression angle for various wind velocities and radar wavelengths. Comparison with available sea-clutter measurements are made. It is concluded that the concept of facet size in relationship to flatness tolerance and slope distribution is useful for describing a rough surface from which radar waves are reflected.Keywords
This publication has 7 references indexed in Scilit:
- The correlation of radar sea clutter on vertical and horizontal polarization with wave height and slopePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Mean roughness factor as a function of wind velocityJournal of Geophysical Research, 1961
- Relationship between surface slope, average facet size, and facet flatness tolerance of a wind-disturbed water surfaceJournal of Geophysical Research, 1961
- On the Mechanisms of Radar Sea ClutterProceedings of the IRE, 1957
- Measurement of the Roughness of the Sea Surface from Photographs of the Sun’s GlitterJournal of the Optical Society of America, 1954
- A Simple Optical Method for Measuring the Statistical Distribution of Water Surface SlopesJournal of the Optical Society of America, 1954
- Frequency Dependence of the Properties of Sea EchoPhysical Review B, 1946