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遥感技术与应用  2010, Vol. 25 Issue (4): 474-479    DOI: 10.11873/j.issn.1004-0323.2010.4.474
研究与应用     
利用POLSAR数据探索极化相关系数在居民地提取中的作用

张 露,郭华东,李新武
中国科学院对地观测与数字地球科学中心数字地球重点实验室,北京 100190
Research on Polarimetric Correlation Coefficient in Residential Information Extraction by Using POLSAR Image
ZHANG Lu,GUO Hua-dong,LI Xin-wu
Key Laboratory of Digital Earth,Center for Earth Observation and Digital Earth,
Chinese Academy of Sciences,Beijing 100190,China
 全文: PDF(4424 KB)  
摘要:

利用渭南地区ALOS-PALSAR极化数据,探索右旋—左旋圆极化相关系数|ρrrll|、水平—垂直线性极化相关系数|ρhhvv|以及规范化的圆极化相关系数|ρrrll|/|ρ0|在城市及乡镇居民地提取中的应用潜力。研究证明:① |ρrrll|是提取城镇居民地信息的重要参数,但对于个别非居民地地区(文中的渭河河滩地区),|ρrrll|无法将其与居民地区分,结合|ρhhvv|与|ρrrll|能够增加居民地的识别能力,提高居民地的提取精度;

② |ρrrll|/|ρ0|参数对于研究建筑物结构具有很大的潜力,但对于居民地信息提取,尤其是乡镇地区的居民地信息提取作用不大。

关键词: 极化合成孔径雷达极化相关系数居民地提取    
Abstract:

Study the potential application of polarimetric correlation coefficients in residential information extraction by using Polarimetric Synthetic Aperture Radar (POLSAR) image acquired by ALOS\|PALSAR,including R-L circular polarimetric correlation coefficient |ρrrll|,H\|V polarimetric correlation coefficient |ρhhvv|,and normalized R-L circular polarimetric correlation coefficient |ρrrll|/|ρ0|.The research shows that:① |ρrrll| can extract effectively the residential information of cities and towns.Combination of |ρrrll| with |ρhhvv| can improve the accuracy on residential information extraction;② |ρrrll|/|ρ0| can be used to study the structure of buildings,but not the residential information extraction,especially in town.

Key words:  Polarimetric Synthetic Aperture Radar (POLSAR)    Polarimetric correlation coefficient    Residential information extraction
出版日期: 2010-10-21
基金资助:

国家重点基础研究计划项目“空间观测全球变化敏感因子的机理与方法”(2009CB723906)。

作者简介: 张露(1976- ),男,博士,助理研究员,研究领域为极化雷达遥感。E-mail:luzhang@ceode.ac.cn。
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引用本文:

张 露, 郭华东, 李新武. 利用POLSAR数据探索极化相关系数在居民地提取中的作用[J]. 遥感技术与应用, 2010, 25(4): 474-479.

ZHANG Lu, GUO Hua-dong, LI Xin-wu. Research on Polarimetric Correlation Coefficient in Residential Information Extraction by Using POLSAR Image. Remote Sensing Technology and Application, 2010, 25(4): 474-479.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2010.4.474        http://www.rsta.ac.cn/CN/Y2010/V25/I4/474

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