Comments on “Novel Polarimetric Contrast Enhancement Method Based on Minimal Clutter to Signal Ratio Subspace”

A novel polarimetric contrast enhancement method based on minimal clutter to signal ratio (MCSR) subspace was proposed for target detection. The latter is a typical trace ratio (TR) problem. In this article, a more effective iterative method is proposed to solve this problem. Moreover, a very simple and suboptimal method is also suggested by the eigenvalue decomposition (EVD), which performs better in ship detection.