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Polarisation: Applications in Remote Sensing$
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Shane Cloude

Print publication date: 2009

Print ISBN-13: 9780199569731

Published to Oxford Scholarship Online: February 2010

DOI: 10.1093/acprof:oso/9780199569731.001.0001

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Introduction to radar interferometry

Introduction to radar interferometry

Chapter:
(p.208) 5 Introduction to radar interferometry
Source:
Polarisation: Applications in Remote Sensing
Author(s):

S. R Cloude

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199569731.003.0005

This chapter forms an introduction to the techniques and ideas behind radar interferometry and its application to remote sensing. It provides a link between Chapters 1-4, which consider polarisation effects only, and Chapters 6-8, which deal with the fusion of polarisation with interferometry. It begins with a review of different modes, including across-track, along-track and differential, before considering in detail the relationship between interferometric phase and surface parameters such as elevation and displacement. The error in phase is then associated with coherence, and the various sources of loss of coherence in interferometry are reviewed. Special attention is paid to volume decorrelation, as this is a function of several important parameters in volume scattering, and a new approach based on a Fourier-Legendre series expansion is used to model arbitrary volumes.

Keywords:   Radar Interferometry, Across-Track, Along-Track, Differential, Coherence, Volume Decorrelation, Temporal Decorrelation

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