Geometric Correction of PHI Hyperspectral Image without Ground Control Points

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Luan, Kuifeng^1,2,3 ; Tong, Xiaohua^1 ; Ma, Yanhua^2 ; Shu, Rong^2 ; Xu, Weiming^2 ; Liu, Xiangfeng^1,3

College of Survey and Geo-information, Tongji University, Shanghai, 200092, China^1

Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China^2

Center of Spatial Information Science and Sustainable Development, Tongji University, Shanghai, 200092, China^3

关键词: Airborne systems;    Geometric correction;    Ground control points;    HyperSpectral;    Imagery data;    Mapping products;    Maximum error;    Push broom hyperspectral imager;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012193/pdf
DOI  :  10.1088/1755-1315/17/1/012193

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Geometric correction without ground control points (GCPs) is a very important topic. Conventional airborne photogrammetry is difficult to implement in areas where the installation of GCPs is not available. The technical of integrated GPS/INS systems providing the positioning and attitude of airborne systems is a potential solution in such areas. This paper first states the principle of geometric correction based on a combination of GPS and INS then the error of the geometric correction of Pushbroom Hyperspectral Imager (PHI) without GCP was analysed, then a flight test was carried out in an area of Damxung, Tibet. The experiment result showed that the error at straight track was small, generally less than 1 pixel, while the maximum error at cross track direction, was close to 2 pixels. The results show that geometric correction of PHI without GCP enables a variety of mapping products to be generated from airborne navigation and imagery data.