DocumentCode :
2855723
Title :
A Novel Height Reconstruction Approach Based on MLE Using Multi-frequency InSAR Data
Author :
Zou, Bin ; Wang, Wei ; Sun, Deming ; Zhang, Lamei
Author_Institution :
Dept. of Inf. Eng., Harbin Inst. of Technol., Harbin
fYear :
2006
fDate :
July 31 2006-Aug. 4 2006
Firstpage :
1244
Lastpage :
1247
Abstract :
SAR interferometry allows height reconstruction of the earth surface. A method based on the use of multi-frequency interferograms and Maximum Likelihood Estimation (MLE) has recently been proposed. However without a priori knowledge of the terrain, the result of the reconstruction is unsatisfied in practical cases. In this paper, we present a novel method to reconstruct highly sloped and discontinuous terrain height profiles using multi-frequency interferograms. It is based on MLE using multi-frequency interferograms joint statistic property, combining with some conventional signal frequency phase unwrapping algorithm. The method can not only improve efficiency of the MLE, but also ensure reliability of the estimation.
Keywords :
geophysical signal processing; geophysical techniques; height measurement; maximum likelihood estimation; radar interferometry; radar signal processing; remote sensing by radar; synthetic aperture radar; topography (Earth); Earth surface height reconstruction; MLE based height reconstruction approach; SAR interferometry; discontinuous terrain height profile; maximum likelihood estimation; multifrequency InSAR data; multifrequency interferograms; sloped terrain height profile; Data engineering; Earth; Frequency; Image reconstruction; Maximum likelihood estimation; Phase noise; Probability density function; Statistics; Surface reconstruction; Synthetic aperture radar interferometry;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2006. IGARSS 2006. IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-9510-7
Type :
conf
DOI :
10.1109/IGARSS.2006.321
Filename :
4241468
Link To Document :
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