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10 - Radar Remote Sensing

Theory and Applications

from Part I - Theory of Remote Compositional Analysis Techniques and Laboratory Measurements

Published online by Cambridge University Press:  15 November 2019

By
Jakob van Zyl ,
Charles Elachi  and
Yunjin Kim
Edited by
Janice L. Bishop ,
James F. Bell III  and
Jeffrey E. Moersch
Janice L. Bishop
Affiliation:
SETI Institute, California
James F. Bell III
Affiliation:
Arizona State University
Jeffrey E. Moersch
Affiliation:
University of Tennessee, Knoxville
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Summary

Imaging radars are all-weather instruments that can image planetary surfaces regardless of local atmospheric or solar illumination conditions. Radar images provide information about surfaces that are complementary to the chemistry usually inferred from visible and infrared images. Instead, radar images are strongly influenced by surface roughness and geomorphology, and to a lesser extent by the bulk electrical properties of the surface. This chapter describes the basic principles of high-resolution synthetic aperture radars (SARs), as well as advanced SAR implementations. Radar polarimetry provides information about surface roughness and electrical properties, while radar interferometry allows the measurement of surface topography and surface deformation following events such as earthquakes or volcanic inflation. Radar imagers have returned spectacular information about the surfaces of both Venus and Titan, bodies with dense, opaque atmospheres that are difficult to image using traditional camera systems. Examples of both planetary and Earth observations with SAR are discussed to illustrate the utility of these images.

Keywords

radarSynthetic Aperture Radar (SAR)scatteringradar cross sectionbackscatter cross section
Type
Chapter
Information
Remote Compositional Analysis
Techniques for Understanding Spectroscopy, Mineralogy, and Geochemistry of Planetary Surfaces
 , pp. 239 - 258
Publisher: Cambridge University Press
Print publication year: 2019

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