广义高斯模型阈值的南极冰盖冻融探测

doi:10.7522/j.issn.1000-0240.2015.0104

冰川冻土 ›› 2015, Vol. 37 ›› Issue (4): 940-945.doi: 10.7522/j.issn.1000-0240.2015.0104

广义高斯模型阈值的南极冰盖冻融探测

王星东^{1 2 3}, 王成², 李新广¹

1. 河南工业大学信息科学与工程学院, 河南郑州 450001;
2. 中国科学院遥感与数字地球研究所, 北京 100094;
3. 江西省数字国土重点实验室, 江西南昌 330013

收稿日期:2014-08-30 修回日期:2015-02-15 出版日期:2015-08-25 发布日期:2016-01-18
通讯作者: 王成, E-mail: wangcheng@radi.ac.cn. E-mail:wangcheng@radi.ac.cn
作者简介:王星东(1982-), 男, 陕西宝鸡人, 讲师, 2013年在中南大学获博士学位, 现为中国科学院遥感与数字地球研究所在职博士后, 主要从事主被动微波遥感冰盖冻融探测研究. E-mail: zkywxd@163.com
基金资助:
国家自然科学基金项目(41076129; 41274123); 河南省教育厅自然科学项目(14A420003); 河南工业大学博士基金项目(150525); 江西省数字国土重点实验室开放研究基金项目(DLLJ201405)资助

Detecting the Antarctic melting zones based on generalized Gaussian model threshold

WANG Xingdong^{1 2 3}, WANG Cheng², LI Xinguang¹

1. College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China;
2. Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;
3. Jiangxi Province Key Lab for Digital Land, Nanchang 310013, China

Received:2014-08-30 Revised:2015-02-15 Online:2015-08-25 Published:2016-01-18

摘要/Abstract

摘要： 在微波散射计的简单冰盖融化物理模型的基础上, 提出了不依赖于实地观测数据的自动阈值分割的南极冰盖冻融探测的新算法, 即利用广义高斯模型对通过微波散射计简单冰盖融化物理模型变换得到的数据做直方图统计, 得到干湿雪划分的最优阈值, 从而得到干湿雪的冻融分布图. 这种算法不但解决了物理模型算法需依赖实测冰盖融化信息才能进行冰盖冻融探测的问题, 而且能自动选择较多的样本, 提高了冰盖冻融探测的计算效率、实用性和可操作性. 算法也能被应用到其他地区, 为全球的冰盖冻融探测提供了方法学的支持和补充.

关键词: 冻融探测, 微波散射计, 直方图统计, 南极, 广义高斯模型

Abstract: On the basis of the simple snowmelt physical model for microwave scatterometer, a new automatic threshold segmentation algorithm for detecting Antarctic ice-sheet melting zones was proposed, which did not depend on field observation. That is the histogram with the data of the physical model by using generalized Gaussian model to automatically get Antarctic melting zone distribution. The algorithm improves the computational efficiency, usability and operability of the melting zones, because the algorithm does not rely on the actual melt information and can automatically select more samples. The algorithm can also be applied to other regions, providing methodological support and supplement for the global melting zone detection.

Key words: melting zone detection, microwave scatterometer, histogram, Antarctica, generalized Gaussian model

中图分类号:

P237

王星东, 王成, 李新广. 广义高斯模型阈值的南极冰盖冻融探测[J]. 冰川冻土, 2015, 37(4): 940-945.

WANG Xingdong, WANG Cheng, LI Xinguang. Detecting the Antarctic melting zones based on generalized Gaussian model threshold[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2015, 37(4): 940-945.

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广义高斯模型阈值的南极冰盖冻融探测

Detecting the Antarctic melting zones based on generalized Gaussian model threshold

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