THE SIMULATION OF THE SAR IMAGE OF A SHIP WAKE

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Authors
  1. Tunaley, J.K.E.
  2. Buller, E.H.
  3. Wu, K.H.
  4. Rey, M.T.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN);London Research and Development, London ONT (CAN);Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
A computer simulation of L-band SAR (Synthetic Aperture Radar) images of surface-ship wakes is described, and the simulation results are compared to actual SeaSAT, satellite-borne SAR imagery. The model used in the simulation accounts for both the disturbance produced in the water by the moving ship and the influence of the background sea. The radar scatter from the wake is modeled using the Bragg mechanism. A two-scale model of the sea surface is employed in which it is assumed that the small wavelength Bragg waves are modulated by the larger scale ambient sea and wake fluctuations. The larger scale fluctuations are important because they can alter the local angle of incidence and thus cause a tilt modulation in the scattering coefficient.
Date of publication
15 Jan 1991
Number of Pages
9
Reprinted from
IEEE Transactions on Geoscience and Remote Sensing, vol 29, no 1, 1991, p 149-156
DSTKIM No
91-03846
CANDIS No
71036
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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