以极化方位角估计为基础,对由方位向地形引起的极化分解误差进行深入探讨,详细分析方位向地形对4参数Yamaguchi分解的影响,同时利用全极化SAR方位角估计减少地形因素带来的影响。最后,利用AIRSAR系统于1992年在San Francisco地区的全极化数据进行实验分析。实验结果表明,利用极化方位角补偿的方法,可以改善Yamaguchi分解的精度。

Based on the polarimetric orientation angle estimation,we discuss the decomposition error caused by the azimuth slope. We analyze the azimuth slope effects on the Yamaguchi model,and use the polarimetric SAR azimuth estimation to reduce the terrain effect. Finally,we apply this approach to a full polarimetric AIRSAR image of San Francisco from 1992. The experiments show that the polarimetric orientation angle composition could improve the precision of the Yamaguchi model.