Quantitative comparison of terrain height accuracy between X-band and L-band polarimetric SAR interferometry

Compared with SAR interferometry(InSAR), polarimetric SAR interfermotry(PolInSAR) acquires plenty information to estimate parameters, and on the other side, the penetrability of low frequency electromagnetic wave is better than high frequency. So an accurate retrieval of the topography can be implemented from low frequency quad polarimetric SAR interfermotry on the basis of the Random Volume over Ground (RVoG) scattering model abstractly. But there is no paper validation about this theory with experiment data from quantitative point of view. In this paper, analysis and comparison of the quantitative topography accuracy between InSAR and PolInSAR, between X-band PolInSAR and L-band PolInSAR are presented firstly with data validation. Simulated data are used to prove the validity.