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Spaceborne Polarimetric SAR Interferometry: Performance Analysis and Mission Concepts
- Source :
- EURASIP Journal on Advances in Signal Processing, Vol 2005, Iss 20, p 354018 (2005)
- Publication Year :
- 2005
- Publisher :
- SpringerOpen, 2005.
-
Abstract
- We investigate multichannel imaging radar systems employing coherent combinations of polarimetry and interferometry (Pol-InSAR). Such systems are well suited for the extraction of bio- and geophysical parameters by evaluating the combined scattering from surfaces and volumes. This combination leads to several important differences between the design of Pol-InSAR sensors and conventional single polarisation SAR interferometers. We first highlight these differences and then investigate the Pol-InSAR performance of two proposed spaceborne SAR systems (ALOS/PalSAR and TerraSAR-L) operating in repeat-pass mode. For this, we introduce the novel concept of a phase tube which enables (1) a quantitative assessment of the Pol-InSAR performance, (2) a comparison between different sensor configurations, and (3) an optimization of the instrument settings for different Pol-InSAR applications. The phase tube may hence serve as an interface between system engineers and application-oriented scientists. The performance analysis reveals major limitations for even moderate levels of temporal decorrelation. Such deteriorations may be avoided in single-pass sensor configurations and we demonstrate the potential benefits from the use of future bi- and multistatic SAR interferometers.
Details
- Language :
- English
- ISSN :
- 16876172 and 16876180
- Volume :
- 2005
- Issue :
- 20
- Database :
- Directory of Open Access Journals
- Journal :
- EURASIP Journal on Advances in Signal Processing
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.73fcba538a54696b8a2ed48e0d64e07
- Document Type :
- article
- Full Text :
- https://doi.org/10.1155/ASP.2005.3272