合成孔径雷达影象提取雪盖信息研究

李震; 曾群柱

doi:10.11834/jrs.1996024

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合成孔径雷达影象提取雪盖信息研究
The Method Study of Snow-cover Mapping with SAR Image
1996年第3期
纸质出版：1996
DOI： 10.11834/jrs.1996024
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[1]李震,曾群柱.合成孔径雷达影象提取雪盖信息研究[J].环境遥感,1996(03):200-205. DOI： 10.11834/jrs.1996024.

The Method Study of Snow-cover Mapping with SAR Image[J]. Journal of Remote Sensing, 1996, (3). DOI： 10.11834/jrs.1996024.

摘要

在分析合成孔径雷达（ＳＡＲ）成象机理及雪盖参数散射特性的基础上，利用航天飞机承载的成象雷达（ＳＩＲ—Ｃ）获取的多波段、多极化ＳＡＲ数据，进行提取雪盖信息的实验。结果表明Ｃ波段ＨＨ、ＶＶ影象能很好地区别湿雪与非雪盖区，而区分干雪与岩石较困难；Ｌ波段ＨＨ、ＶＶ影象较容易将雪盖同其它物体区分开；Ｃ、Ｌ波段的交叉极化ＨＶ、ＶＨ区分干雪与岩石效果很好。故利用多波段、多极化ＳＡＲ进行雪盖制图是可行的。

Abstract

According to the imaging principle of Synthetic Aperture Radra and dack-scattering characteristics of snow

authors examined the capability of snow-cover mapping with multifrequency and multipolarized SAR images from SIR-C carried by shuttle. The result shows that C-band HH and W images can be used to discriminate between wet-snow and snow-free area

but there is a prolem to separate rock from dry snow; L-band HH and VV images are easily to separate snow-cover area from others; and cross-polarized SAR images of C L-bands can be used to discriminate betWeen dry-snow and rock. So it is possible to map snowcover using SAR data.