基于GPS影像的几何精纠正在农牧业动态监测中的应用——以庆阳地区为例  

A study of rectifying remote sensing image based on GPS for the application of dynamic monitoring in farming and stockbreeding——Taking the region of Qingyang as an example

作　　者：杨丽娜[1] 陈全功[1] 杨永顺[1] 

机构地区：[1]兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《草业科学》2007年第1期73-77,共5页Pratacultural Science

基　　金：西部七省区生态建设与草业开发专家系统(2003BA901A20)

摘　　要：随着遥感技术的不断发展和日趋成熟,利用各种遥感影像监测大面积的草原年度性、季节性变化,已经成为各地进行草原动态监测及农牧业生产监测的主要手段。而遥感影像的几何性能与几何精度是影像解译的重要基础,它直接影响解译的精度,因此影像的几何纠正是影像处理的重要内容。为了进一步提高精度,就IRS-P6卫星影像为例,在ERDAS IMAGINE 8.7平台上,采用GPS控制点(矢量图)作为地理参照,并对其的优劣性进行了分析。通过遥感分类结果与实地调查结果数据的分析,证明了用GPS点作为地理参照具有更大的精度,从而可提高影像解译的准确度。该方法为我国西北部农牧业的遥感动态监测事业的飞速发展,提供了更大的可行性。With the continual development and maturation of remote sensing technology, the main means of dynamic monitoring of grassland worldwide becomes to use the image to monitor large--scale grassland of diversification yearly. The performance and geometric precision of the image are the most important foundation of the image interpretion, which directly influences the interpretive precision of remote sensing image, therefore,the image geometric correction is important. For the sake of higher precision, the author takes It also can assure the precision of the image interpretion. an example of IRS-P6 satellite image, based on ERDAS IMAGINE 8. 7 flat plot, utilizing GPS control point （coverage layer）as geography consult, estimating whether it is choiceness or not,, analyzing the datum of classification and field investigation, to a certain extent, proving that it is the best precision by adopting GPS control point as geography consult, which can improve the precision of the image interpretion. In the northwest of China,it is possible to advance the remote sensing inspection of farming and stockbreeding through using this method.

关 键 词：几何精纠正GPS点 影像解译 农牧业 

分 类 号：S126[农业科学—农业基础科学]