Polarimetric Analysis of Bistatic Synthetic Aperture Radar Imagery
Abstract
This report documents the outcomes for an NRL 6.1 Base Program project towards developing the polarimetric techniques for the analysis of bistatic synthetic aperture radar imagery. Bistatic polarimetric radar collects additional scattering information with more degrees of freedom than monostatic polarimetric radar. In this program, we explore the potential advantages of using bistatic polarimetric observations for remote sensing applications. We present the physical foundation geared toward bistatic imagery interpretation and the fundamental challenge induced by the entangled bistatic geometry. The analysis is formed on the bistatic scattering models and characterization of several common scattering mechanisms, such as double-bounce scattering, surface scattering, and random volume scattering. We develop target decomposition and parameter estimation algorithms to demonstrate the enhanced utility of bistatic polarimetric imagery. Bistatic data collection can be costly and demands extra mission planning; concerning this, we present a sensitivity study to address the optimal choice of bistatic imaging geometries for soil moisture retrievals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 12, 2024
- Accession Number
- AD1226070
Entities
People
- Mark A. Sletten
- Yanting Wang
Organizations
- United States Naval Research Laboratory