Some Technological Problems in Satellite Data Processing for Land Resources Inventory in the Area of Three Gorges of Yangtze River

doi:10.11834/jrs.1994028

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Some Technological Problems in Satellite Data Processing for Land Resources Inventory in the Area of Three Gorges of Yangtze River
Issue 3, (1994)
Published：1994
DOI： 10.11834/jrs.1994028
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[1]潘贤章,曾志远.长江三峡地区资源遥感图像处理中的几个技术难题[J].环境遥感,1994(03):209-214. DOI： 10.11834/jrs.1994028.

Some Technological Problems in Satellite Data Processing for Land Resources Inventory in the Area of Three Gorges of Yangtze River[J]. Journal of Remote Sensing, 1994, (3). DOI： 10.11834/jrs.1994028.

摘要

本文对长江三峡地区资源遥感图像处理中的三个技术难题进行了讨论并提出了解决办法：（１）跨两高斯投影带的卫星遥感图像的几何校正，采用分两个子区校正的办法，提出一个简便而有效的确定子区范围的方法；（２）同类异谱问题采用类型细分的方法来解决，类型细分时考虑阴阳坡、作物季相及植被覆盖度等影响因素；（３）同谱异类带来的错分类，可引进地理控制系统对其校正，从而提高了成图精度。

Abstract

This paper deals with three problems in data processing for land reso-urce inventory in the area of Three Gorges of Yangtze River.（1）In order to dothe geometric correction of the satellite image which covers two Gauss-Kruger Pro-jection Belts

we divide the image into two subareas

and introduce an easv but ef-fective method to identify the ranges of the two subareas.（2）In order to deal withsever“different spectrum within a same ground feature”problem

we divide one fea-ture into several small ones according to three kinds of factors including the diffe-rence between opaco and adret

the crop seasonal appearance and the cover degreeof vegetation.（3）We apply the geographic control system to the correction of someerrors which are cause by the“different ground feature with same spectrum”

inorder to raise the accuracy of mapping.