极化雷达教程（搬运工） 来自加拿大自然资源https://www.nrcan.gc.ca/earth-sciences/geomatics/satellite-imagery-and-air-photos/satellite-imagery-and-products/educational-resources/tutorial-radar-polarimetry/9579，原网页在线可读。包括极化雷达应用，基本概念，分类。