摘要
以太湖为研究对象,根据环境一号卫星数据和实测得到的水面叶绿素a浓度,利用ENVI软件对太湖地区进行校正和裁剪等有关处理并获取光谱信息与实测叶绿素含量来进行建模选取,最后对模型反演结果进行对比并做精度验证。选取了遥感影像成像叶绿素a浓度值,对得到的58个样本进行分析,从样本随机选取2/3的数据用于建模,剩下1/3数据用于模型验证,得到了37个建模样本和20个验证样本,通过验证说明,本文所建立叶绿素a浓度反演模型具有较高的精度。
In Taihu lake as the research object,based on CCD data,and the water environment of small satellite measured concentrations of chlorophyll a,through the image radiation correction,atmospheric correction,geometric correction and the Taihu lake area and spectral information selection model with the measured chlorophyll content,and the model inversion results contrast and precision of test and verify. This study selected the remote sensing image imaging the chlorophyll a density. From 58 samples randomly selected from two thirds of the data used in modeling,the remaining one-third of the data used in model validation,a quick modeling to 37 samples,and 20 validation samples.
作者
王伟轩
吉长东
WANG Weixuan;JI Changdong(College of Surveying, Mapping and Geographical Science, Liaoning Technical University, Fuxin 123000, China)
出处
《测绘与空间地理信息》
2018年第4期192-195,共4页
Geomatics & Spatial Information Technology
关键词
遥感
环境一号卫星
叶绿素A
HJ- 1 satellite
remote sensing
chlorophyll-a
