Abstract
The concepts of critical baseline and maximal effective baseline have been defined for interferometric SAR (InSAR) DEM application based on the spatial decorrelation (which is a function of baseline). This paper puts forward these two concepts to polarimetric interferometric SAR (Pol-InSAR) forest height estimation application. The application makes use of volume decorrelation, which is also a function of baseline. So both the spatial decorrelation and volume decorrelation are considered to determine Pol-InSAR critical and maximal effective baseline. Firstly various decorrelation effects are discussed. Then the calculation formula of Pol-InSAR maximal effective baseline are presented and compared to that of InSAR. For validation, RVoG-based and PolSARpro-based simulation data and DLR ESAR data are used. The concept of Pol-InSAR maximal effective baseline is of practical significance in selection of Pol-InSAR image pairs as well as in the design of further Pol-InSAR systems.
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Zhou, Y., Hong, W., Wang, Y. et al. Maximal effective baseline for polarimetric interferometric SAR forest height estimation. Sci. China Inf. Sci. 55, 867–876 (2012). https://doi.org/10.1007/s11432-011-4398-1
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DOI: https://doi.org/10.1007/s11432-011-4398-1