Title :
An estimation of sea surface influence on radar reflectivity of ships
Author :
Shtager, Evgeny A.
Author_Institution :
Sci. Center, Acad. of Sci., St. Petersburg, Russia
fDate :
10/1/1999 12:00:00 AM
Abstract :
A theoretical and numerical method is presented for the analysis of sea surface influence on the radar reflectivity of ships. The method of analysis is based on presentation of the field density scattered by the ship as a sum of echoes from different backscatterers located on the surface of the ship. The influence of sea surface is accounted for under the physical optics assumption. An analytical expression is obtained for the propagation factor with the ship in line-of-sight (LOS) range. Plots are illustrated for the dependence of the propagation factor on ship range for different heights of the radar antenna. The effect of microwave backscattering amplification from the ship is predicted for grazing angles of observation within LOS range
Keywords :
backscatter; electromagnetic wave scattering; marine radar; microwave propagation; ocean waves; radar theory; rough surfaces; ships; backscatterers; grazing angles; line-of-sight range; microwave backscattering amplification; physical optics; propagation factor; radar antenna height; radar reflectivity; scattered field density; sea surface; ships; Marine vehicles; Microwave propagation; Optical propagation; Optical scattering; Physical optics; Radar antennas; Radar scattering; Radar theory; Reflectivity; Sea surface;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
