CAJ | 학술논문

子像元定位技术是一种提高图像详度和分辨率的简单、高效的方法,近年来已成为遥感领域研究的一个热点.该方法已经在许多方面得到了应用,但目前将子像元定位技术应用于湖泊水质制图在国内外鲜有报道.本文基于Landsat-7 ETM+数据对太湖的叶绿素a(Chl-a)浓度进行试验,结果表明在水质监测中应用子像元定位技术可以获得超过遥感影像自身分辨率的叶绿素a浓度分布图,更好地反映了其空间分布的细节,说明子像元定位技术在提高湖泊水质监测的精度方面具有一定的潜力.
자상원정위기술시일충제고도상상도화분변솔적간단、고효적방법,근년래이성위요감영역연구적일개열점.해방법이경재허다방면득도료응용,단목전장자상원정위기술응용우호박수질제도재국내외선유보도.본문기우Landsat-7 ETM+수거대태호적협록소a(Chl-a)농도진행시험,결과표명재수질감측중응용자상원정위기술가이획득초과요감영상자신분변솔적협록소a농도분포도,경호지반영료기공간분포적세절,설명자상원정위기술재제고호박수질감측적정도방면구유일정적잠력.
Sub-pixel mapping is a simple and efficient technique for enhancing the spatial resolution Of images. In recent years, sub-pixel mapping became a hot research spot in remote sensing. It has been applied in land cover mapping practically. However, it was rarely studied for application in mapping of water quality. Its principle was introduced firstly, and then the accuracy and feasibility was tested in Taihu Lake, China based on Landsat-7 ETM + image. The results expressed that this technique was effective in solving the mixed-pixel problem of mapping of water quality.