IMPACT OF SCALE SEPARATION IN THE COHERENT TWO-SCALE MODEL ON DOPPLER AND NORMALIZED CROSS SECTION PREDICTIONS FOR SEA BACKSCATTER - A NUMERICAL STUDY

被引：1

作者：

Toporkov, Jakov, V ^{[1
]}

机构：

[1] US Naval Res Lab, Remote Sensing Div, Washington, DC 20375 USA

来源：

IGARSS 2020 - 2020 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM | 2020年

关键词：

sea surface electromagnetic scattering; numerical simulations; two-scale model; Doppler spectrum; SIMULATIONS; SCATTERING;

D O I：

10.1109/IGARSS39084.2020.9324430

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

The study investigates the accuracy of the Doppler and normalized radar cross section (NRCS) predictions when using the coherent scattered field expressions of the Two-Scale Model (TSM). This is done through large-scale Monte Carlo simulations in the 2D space, followed by comparisons to the results of integral equation-based exact numerical calculations. Of particular interest is the choice of the scale separation parameter (intrinsic to the TSM) that minimizes the error for either the Doppler spectrum moments or the NRCS. The optimal separation length is found to be much smaller (about 1-1.5 electromagnetic wavelengths) than the conventionally accepted values. This quantity is seen decreasing with stronger wind.

引用

页码：5674 / 5677

页数：4

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