Encyclopedia of Earthquake Engineering

2015 Edition
| Editors: Michael Beer, Ioannis A. Kougioumtzoglou, Edoardo Patelli, Siu-Kui Au

InSAR and A-InSAR: Theory

  • Andrew HooperEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-642-35344-4_220

Synonyms

DInSAR; Interferometric synthetic aperture radar; MT-InSAR; Multi-temporal InSAR; Persistent scatterer InSAR; PSI; PS-InSAR; SAR interferometry; SBAS; SB-INSAR; Small baseline InSAR; Time-series InSAR; TS-InSAR

Introduction

The SAR technique allows the formation of high-resolution radar images from the data acquired by side-looking instruments installed on spacecraft, aircraft, or the ground. The fundamentals underlying SAR image processing are presented in Chapter 3 “  SAR Images, Interpretation of”. Each pixel of an image corresponds to the scattered signal from a resolution element on the ground, which is transmitted and received by the SAR. A pixel is characterized by two values: the amplitude and the phase. While the amplitude of a single image can be interpreted in terms of the backscattering properties of the ground (Fig. 1a), the phase is not very informative because it is a pseudorandom contribution from the configuration of all scatterers within the resolution...
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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.School of Earth and EnvironmentThe University of Leeds, Maths/Earth and Environment BuildingLeedsUK