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Ground-Based Synthetic Aperture Radar Data processing for Deformation Measurement
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Satellite Positioning.
2009 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis describes a _rst hands-on experience working with a Ground-Based Synthetic

Aperture Radar (GB-SAR) at the Institute of Geomatics in Castelldefels (Barcelona,

Spain), used to exploit radar interferometry usually employed on space borne platforms.

We describe the key concepts of a GB-SAR as well as the data processing procedure to

obtain deformation measurements. A large part of the thesis work have been devoted to

development of GB-SAR processing tools such as coherence and interferogram generation,

automating the co-registration process, geocoding of GB-SAR data and the adaption of

existing satellite SAR tools to GB-SAR data. Finally a series of _eld campaigns have

been conducted to test the instrument in di_erent environments to collect data necessary

to develop GB-SAR processing tools as well as to discover capabilities and limitations of

the instrument.

The key outcome of the _eld campaigns is that high coherence necessary to conduct

interferometric measurements can be obtained with a long temporal baseline. Several

factors that a_ect the result are discussed, such as the reectivity of the observed scene,

the image co-registration and the illuminating geometry.

Abstract [sv]

Det har examensarbetet bygger p_a erfarenheter av arbete med en mark-baserad syntetisk

apertur radar (GB-SAR) vid Geomatiska Institutet i Castelldefels (Barcelona, Spanien).

SAR tekniken till_ater radar interferometri som ar en vanligt forekommande teknik b_ade p_a

satellit och ygburna platformar. Det har arbetet beskriver instrumentets tekniska egenskaper

samt behandlingen av data for att uppmata deformationer. En stor del av arbetet

har agnats _at utveckling av GB-SAR data applikationer som koherens och interferogram

berakning, automatisering av bild matchning med skript, geokodning av GB-SAR data

samt anpassning av be_ntliga SAR program till GB-SAR data. Slutligen har matningar

gjorts i falt for att samla in data nodvandiga for GB-SAR applikations utvecklingen samt

f_a erfarenhet av instrumentets egenskaper och begransningar.

Huvudresultatet av faltmatningarna ar att hog koherens nodvandig for interferometriska

matningar g_ar att uppn_a med relativ l_ang tid mellan matepokerna. Flera faktorer som

p_averkar resultatet diskuteras, som det observerade omr_adets reektivitet, radar bild

matchningen och den illuminerande geometrin.

Place, publisher, year, edition, pages
2009.
Series
TRITA-GIT EX ; 09-11
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-199677OAI: oai:DiVA.org:kth-199677DiVA, id: diva2:1064926
Supervisors
Available from: 2017-01-19 Created: 2017-01-13 Last updated: 2017-01-19Bibliographically approved

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