Paper Info
Title
A stability analysis of the lambda estimator for solving the ambiguity problem in persistent scatterer interferometry
Abstract
Persistent Scatterer Interferometry is a well-known technique to obtain displacement rates in urban areas from a stack of SAR interferograms. Besides the original method introduced by A. Ferretti, C. Prati and F. Rocca in the late 1990's, which estimates the displacement rates and DEM corrections by an ensemble coherence maximization approach (periodogram) based on a common master image, several other algorithms have been introduced in the past few years. One of these approaches has been developed at DLR It incorporates the Least-squares AMBiguity Decorrelation Adjustment (LAMBDA) method that was originally developed for fast GPS double difference ambiguity estimation. In this paper different parameters are tested to investigate robustness and performance of this estimation method. At first the effects of a reduced number of observations and varying reference points on the estimation with LAMBDA are analyzed while in the second part a direct comparison between LAMBDA and ensemble coherence maximization (periodogram) is performed.
Year
DOI
Venue
2007
10.1109/IGARSS.2007.4423243
Barcelona
Keywords
Field
DocType
least squares approximations,radar interferometry,stability,synthetic aperture radar,Least-squares AMBiguity Decorrelation Adjustment LAMBDA method,SAR interferograms,ambiguity problem,ensemble coherence maximization,periodogram,persistent scatterer interferometry,stability analysis,urban areas,Estimation,LAMBDA,PSI
Decorrelation,Computer science,Synthetic aperture radar,Remote sensing,Robustness (computer science),Interferometry,Coherence (physics),Maximization,Lambda,Estimator
Conference
ISSN
ISBN
Citations 
2153-6996
978-1-4244-1212-9
0
PageRank 
References 
Authors
0.34
2
4
Name
Order
Citations
PageRank
Stefan Gernhardt1687.17
Franz J. Meyer218828.67
Richard Bamler3908106.33
Nico Adam417127.22