FIRST-ORDER BRAGG SAR IMAGERY OF KELVIN WAKES AND MOVING INTERNAL WAVE FIELDS

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Authors
  1. Hughes, B.A.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
Two theoretical investigations are given relating to SAR imaging of perturbed surface waves. The first is an analysis of the effect of a long wavelength corrugation on the SAR image formed by lst-order Bragg scattering from a deterministic sea wave pattern such as a Kelvin wake. A standard SAR processor is assumed. The second is a stochastic treatment of the SAR imagery formed by a lst-order Bragg scattering process from surface waves modulated by the horizontal surface currents of internal waves. Propagational velocities (normalized by the SAR platform velocity) are included to first order. For the Kelvin wake analysis it is shown that the vertical curvature of the corrugating wave can rotate the effective Bragg acceptance angle by up to approximately equals to 10 degrees for typical wave parameters. TRUNCATED
Report Number
DREP-TM-89-13 — Technical Memorandum
Date of publication
15 Jun 1989
Number of Pages
57
DSTKIM No
89-03281
CANDIS No
61182
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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