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METHOD FOR DESPECKLING OF SINGLE-LOOK DUAL-POLARIZATION SYNTHETIC APERTURE RADAR (SAR) DATA

机译:单眼双极化合成孔径雷达(SAR)数据的去噪方法

摘要

The application discloses a method for despeckling synthetic aperture radar (SAR) images. An SAR image is received. The SAR image comprises pixels which are represented by two dimensional complex valued input vectors. Each input vector comprises a horizontal and a vertical polarization value. For each pixel of a multitude of the pixels, at least one feature strength parameter is calculated. For each pixel of the multitude of the pixels, a dual polarization output matrix Z out is calculated from at least one input vector. If at least one of a predetermined subset of the feature strength parameters has its maximum value, the dual polarization output matrix Z_out is set equal to a dual polarization input matrix Z_in of a corresponding input vector. Otherwise, the dual polarization output matrix Z_out is set equal to a weighted average of dual polarization matrices, the dual polarization matrices comprising a first dual polarization matrix Z struct and a second dual polarization matrix Z_radius. The calculated dual polarization output matrix Z_out is output to an output destination.
机译:该申请公开了一种用于对合成孔径雷达(SAR)图像进行散斑的方法。接收到SAR图像。 SAR图像包括由二维复数值输入向量表示的像素。每个输入矢量包括水平和垂直极化值。对于多个像素中的每个像素,计算至少一个特征强度参数。对于多个像素中的每个像素,从至少一个输入矢量计算出双偏振输出矩阵Z out。如果特征强度参数的预定子集中的至少一个具有其最大值,则将双极化输出矩阵Z_out设置为等于相应输入向量的双极化输入矩阵Z_in。否则,将双偏振输出矩阵Z_out设置为等于双偏振矩阵的加权平均值,该双偏振矩阵包括第一双偏振矩阵Z struct和第二双偏振矩阵Z_radius。计算出的双极化输出矩阵Z_out被输出到输出目的地。

著录项

  • 公开/公告号SG181636A1

    专利类型

  • 公开/公告日2012-07-30

    原文格式PDF

  • 申请/专利权人 EADS SINGAPORE PTE. LTD.;

    申请/专利号SG20120042883

  • 发明设计人 LEE KEN-YOONG;BRETSCHNEIDER TIMO;

    申请日2010-12-10

  • 分类号G01S13/90;

  • 国家 SG

  • 入库时间 2022-08-21 17:22:24

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