HJ-1-A/B optical satellite image geometric correction

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Zhang, Wei^1,2 ; Wu, Wei^1,2 ; Cui, Yan^1,2 ; Wang, Wei^1,2

National Disaster Reduction Center of China, MCA, China^1

Key Laboratory of Disaster Reduction and Emergency Response Engineering, MCA, NO.6 Guangbai East Road Chaoyang District, Beijing, China^2

关键词: Geometric correction;    Geometric modeling;    Ground control points;    Multi-spectral;    Optical satellite images;    Orbit modeling;    Robust estimation;    Small satellite constellation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012221/pdf
DOI  :  10.1088/1755-1315/17/1/012221

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Small satellite constellation of environment and disaster's monitoring and predicting (shorted for HJ-1) is not a mapping satellite, and its parameters of attitude and orbit cannot satisfy the requirement of geometric correction using strict imaging model. On the other hand, due to the 12000 CCD detectors and large overlay of multispectral payload named CCD carried by HJ-1 satellite, the error caused by CCD distortion cannot be ignored. Aiming at these problems of HJ-1, this paper proposes a strict orbit model algorithm based on Ground Control Point (GCP) and collinear condition equations. Through the robust estimation of parameters, this algorithm can effectively set up imaging geometric model of CCD, and satisfy the requirement of high precision geometric correction.