Low-Angle Radar Land Clutter

4

APPROACHES TO CLUTTER MODELING

4.1 INTRODUCTION

The historical technical literature on low-angle land clutter includes a number of different past approaches for attempting to model this complex phenomenon, as reviewed in Chapter 1. Thus, most simply, low-angle clutter has been characterized as a single-variable characteristic or functional relationship between the dependent variable σ° and any one of the following three independent variables: (1) illumination angle to the backscattering terrain point; (2) radar carrier frequency; and (3) range to the backscattering terrain point. Chapters 2 and 3 illustrate at some length the strong dependencies of low-angle clutter on illumination (i.e., depression) angle and radar carrier frequency based ...