A SPATIAL TEMPORAL DYNAMICAL MODEL FOR MULTIPATH SCATTERING FROM THE SEA

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Authors
  1. Leung, H.
  2. Lo, T.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
A new method for modeling sea scattered signals is proposed in this paper. Instead of using a probabilistic model, a spatial temporal dynamical model is employed to model the se scatter phenomenon. Our approach is empirical in the sense that a model is constructed based on experimental data. We extend the approach of using a temporal predictor for temporal dynamical system reconstruction to a spatial temporal predictor for reconstructing a spatial temporal one. The basic spatial temporal dynamical model used in this study is a couple map lattice (CML) rather than the conventional partial differential equation. The Radial Basis Function (RBF) neural network is incorporated into the CML to enhance the function approximation ability, and the autocorrelation function is used to determine the spatial effect across individual channel. An array antenna was used to collect real spatial temporal sea scattered data for this study. Preliminary results shows that the new model provides an accurate description of the sea scattered signals, and has the potential for signal processing applications.
Date of publication
16 May 1995
Number of Pages
8
Reprinted from
IEEE Transcations on Geoscience and Remote Sensing, vol 33, no 2, 1995, p 441-448
DSTKIM No
96-01628
CANDIS No
151648
Format(s):
Document Image stored on Optical Disk;Hardcopy

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