基于PALSAR-1影像的汉函谷关遗迹变化检测研究

发布时间：2018-03-01 00:00

本文关键词： 变化检测 PALSAR- 强度信息相干信息　出处：《遥感技术与应用》2017年05期 　论文类型：期刊论文

【摘要】：合成孔径雷达(SAR)具有全天候、全天时的特点,因此是很好的变化检测信息源。基于SAR的变化检测技术研究有着非常广阔的应用前景。以汉函谷关遗址为实验区,选取2007~2011年7景PALSAR-1影像为数据源,分别研究和比较了基于SAR强度信息和相干信息的变化检测技术,并对研究区拆迁前后地表变化进行了研究。结果表明:利用PALSAR-1相干信息和强度信息的变化检测在汉函谷关遗址动态监测中均具有良好适用性,检测概率分别为0.868和0.697,虚警概率分别为0.385和0.197。中分辨率PALSAR-1相干信息比强度信息对地表变化更为敏感且具有高的信噪比;而基于强度信息的变化检测方法因受斑噪与分辨率的限制,监测应用仍存在局限性。
[Abstract]:Synthetic Aperture Radar (SAR) has the characteristics of all-weather, all-day, so it is a good source of change detection information. The research of change detection technology based on SAR has a very broad application prospect. Seven PALSAR-1 images from 2007 to 2011 are selected as data sources, and the change detection techniques based on SAR intensity information and coherent information are studied and compared respectively. The surface changes before and after the demolition of the study area are studied. The results show that the change detection of PALSAR-1 coherent information and intensity information has good applicability in the dynamic monitoring of Han Funguguan site. The detection probabilities are 0.868 and 0.697, and the false alarm probabilities are 0.385 and 0.197.Medium-resolution PALSAR-1 coherent information is more sensitive to surface changes than intensity information and has high signal-to-noise ratio (SNR). However, the change detection method based on intensity information is still limited by speckle noise and resolution.
【作者单位】：山东科技大学测绘学院;中国科学院遥感与数字地球研究所数字地球重点实验室;
【基金】：国家重点研发计划项目(2016YFB0501502) 中国科学院百人计划项目(Y5YR0300QM) 海南省重大科技计划项目(ZDKJ2016021-02)
【分类号】：TN957.52

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