Phase-difference of urban area in polarimetric SAR images

被引：8
|
作者：
Lee, K. -Y. [1 ]
Oh, Y. [2 ]
Kim, Y. [1 ]
机构：
[1] Korea Aerosp Res Inst, Taejon 305333, South Korea
[2] Hongik Univ, Sch Elect & Elect Engn, Seoul 121791, South Korea
来源：
ELECTRONICS LETTERS | 2012年 / 48卷 / 21期
关键词：
Image enhancement - Radar imaging - Image classification - Polarimeters;
D O I：
10.1049/el.2012.1698
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Proposed is a new phase-difference parameter for classifying urban areas in a polarimetric SAR image. First, the phase-difference characteristics of urban areas was analysed for various orientation angles. Subsequently it was found that the co-polarised phase-difference (CPD) is adequate for an aligned urban area, while the cross-polarised phase-difference (XPD) is the best parameter for a 45 degrees-oriented urban area. Based on these analyses, the CPD was used for a small orientation angle (vertical bar theta vertical bar <= pi/8) and the XPD for a large orientation angle (vertical bar theta vertical bar > pi/8) to improve the accuracy of the urban classification in a polarimetric SAR image. This new technique was verified using polarimetric SAR image data sets (PALSAR and RADARST-2 images).
引用
收藏
页码：1367 / 1368
页数：2
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