全极化合成孔径雷达(SAR)高度信息检测技术

Polarimetric Synthetic Aperture Radar (SAR) Three Dimensional Imaging

从全极化合成孔径雷达（ＳＡＲ）二维图像数据中，经过极化综合计，利用快速搜索算法计算每一个图像像素的极化椭圆方向角 ψ、△ ψ，从而提取雷达方位向的地势倾斜度信息，形成极化 ＳＡＲ三维图像。本文在极化合成孔径雷达（ＳＡＲ）三维成像快速搜索算法的基础上，提出由Ｓｔｏｋｅｓ矢量推导的极化椭圆方向角解模糊算法，并利用美国ＮＡＳＡ１９９４年ＳＩＲ—Ｃ采集的真实全极化合成孔径（ＳＡＲ） Ｍ维图像数据，经计算机处理得到了极化合成孔径（ＳＡＲ）三维成像结果。

Terrain slope information may be drawn from Polarimetric Synthetic Aperture Radar(SAR) two-dimensional image, so that three-dimensional image can be generated. The imaging algorithm discussed in the paper is a key technique to process polarimetric SAR image data to extract terrain slope. The solution fuzzy algorithm of the polarimetric ellipse rotation angle have been proffered and proved in the paper. The target scatter cross-section or signature-peak in the co-polarization signature generate effect to drawing true terrain slope information. Finally, the paper shows the Polarimetric SAR three dimensions images from authentic data.