Short wave spectrum modulation by a surface current field and long waves for SAR imaging process simulation

Abstract

In the framework of the SAR imaging process simulator we are developing, the modification of the short wave spectrum by ocean surface is of great importance. Short waves at the sea surface produce the backscattering of the radar wave. So the modulation of the short wave distribution by ocean surface induces the modulation of the SAR image.In this paper we present a two-step algorithm designed to simulate the modulation of the short waves by both current and long waves. First of all the modulation of the long waves by current is taken into account. Then the modification of the short wave spectrum by long-wave orbital velocity and current is considered.To achieve the calculation we use the action balance equation (ABE) based on a weak interaction theory. ABE theory and the two-step algorithm are described here.