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遥感技术与应用  2015, Vol. 30 Issue (5): 842-848    DOI: 10.11873/j.issn.1004-0323.2015.5.0842
特约论文     
ENVISAT ASAR相干目标的分类识别探测试验与分析—以世界文化遗产都江堰为例
姜爱辉1,2,陈富龙2,刘国林1,代杰1
(1.山东科技大学测绘学院,山东 青岛 266590;
2.中国科学院遥感与数字地球研究所数字地球重点实验室,北京 100094)
Identification and Temporal Analysis of Coherence  Targets Using ENVISAT ASAR Data—A Case Study for Dujiangyan World Cultural Heritage Site
Jiang Aihui1,2,Chen Fulong2,Liu Guolin1,Dai Jie1
 
(1.College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao 266590,China;
2.Key Laboratory of Digital Earth Science,Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100094,China)
 全文: PDF 
摘要:

从永久散射体(PS,Persistent Scatterer)和分布式目标(DS,Distributed Scatterer)机理出发,以四川都江堰世界文化遗产地为例,利用2008~2010年的23幅ENVISAT ASAR图像提取了PS候选点和DS候选区;选取4个样本研究两者时空分布模式,并结合阴影叠掩图和土地分类图对所提取的相干目标进行了分析。实验结果表明,使用振幅离散度阈值法提取的PS候选点总体表现为高相干,主要分布在城区,且在水体和叠掩区有少量分布;设定了提取DS候选区的识别原则提取DS候选区,并确定相干系数数据集最佳的计算窗口大小为7×35。DS候选点主要分布在裸露地表和耕地等区域,其相干性在时间序列上抖动,揭示了人类活动和季节变换对其的影响。利用PS和DS时空分布模式及特性,可有效实现两者相干目标的区分与辨识。

关键词: PS(Persistent Scatterer)DS(Distributed Scatterer)相干阴影叠掩地表分类    
Abstract:

In Dujiangyan world cultural heritage site,Sichuan province,dealing with 23 ENVISAT ASAR images observing in 2008~2010,the Persistent Scatterer(PS)and Distributed Scatterer(DS)candidates are extracted respectively by means of scattering and coherence mechanisms.Four samples were selected to study the spatial-temporal pattern of PS and DS.The difference between PS and DS is further investigated synergistically using the layover/shadow and land cover images.Experimental results show that PS candidates extracted by means of the amplitude that are high coherent and primarily distributed in urban regions;furthermore,a small amount of PS candidates are distributed in water bodies.According to the recognition criteria applied in this paper,DS candidates are extracted together with the optimal window size(7×35)for the coherence image generation.DS candidates are mainly distributed in bare surface and cultivated lands.Which are affected by human activities and seasonal changes,demonstrating coherence vibration in time series.The study of PS and DS with regard to space-temporal distribution pattern and DS with regard to space-temporal distribution pattern and characteristics provides clues for their discrimination as well as identification.

Key words: (Persistent Scatterer)    DS(Distributed Scatterer)    Coherence    Shadow and layover    Land cover classification
收稿日期: 2014-05-25 出版日期: 2015-12-08
:  TP 79  
基金资助:

中国科学院“百人计划”项目(Y2ZZ27101B),国家自然科学基金项目(41201455),国家国际科技合作专项(2013DFG21640),山东科技大学科研创新团队支持计划项目(2011KYTD103)。

通讯作者: 陈富龙(1980-),男,浙江定海人,研究员,主要从事雷达遥感考古、冻土遥感及灾害遥感研究。Email:chenfl@radi.ac.cn。    
作者简介: 姜爱辉(1989-),女,山东德州人,硕士研究生,主要从事微波遥感、SAR影像处理等方面的研究。Email:jiang.ai.hui@163.com。
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引用本文:

姜爱辉,陈富龙,刘国林,代杰. ENVISAT ASAR相干目标的分类识别探测试验与分析—以世界文化遗产都江堰为例[J]. 遥感技术与应用, 2015, 30(5): 842-848.

Jiang Aihui,Chen Fulong,Liu Guolin,Dai Jie. Identification and Temporal Analysis of Coherence  Targets Using ENVISAT ASAR Data—A Case Study for Dujiangyan World Cultural Heritage Site. Remote Sensing Technology and Application, 2015, 30(5): 842-848.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2015.5.0842        http://www.rsta.ac.cn/CN/Y2015/V30/I5/842

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