The Optimum Baseline Analysis for Polinsar Forest Height Mapping

The interferometric vertical wavenumber (or baseline) has a direct impact on PolinSAR forest height mapping, which must be selected appropriately to acquire optimum inversion performance. In this paper, the key parameters influencing the height estimation precision are considered to simplify the system performance analysis. A PolinSAR performance optimization problem is then established according to the geometrical interpretation of the line coherence model. Finally, the contour map of optimum vertical wavenumber varying with forest height and wave extinction is intuitively provided, from which the system designers can easily determine the optimum baseline for PolinSAR forest height mapping.