On-orbit geometric calibration and validation of Optical-1 HR

Yonghua Jiang; Guo Zhang; Wenchao Huang; Xuwen Qin

doi:10.1117/12.2204721

6 August 2015 On-orbit geometric calibration and validation of Optical-1 HR

Yonghua Jiang, Guo Zhang, Wenchao Huang, Xuwen Qin

Proceedings Volume 9669, Remote Sensing of the Environment: 19th National Symposium on Remote Sensing of China; 966906 (2015) https://doi.org/10.1117/12.2204721
Event: Remote Sensing of the Environment: 19th National Symposium on Remote Sensing of China, 2014, Xian City, China

Abstract

Owing to relatively simplistic domestic hardware technology and a lack of on-orbit geometric calibration, particularly interior calibration, the positioning accuracies of Optical-1 HR satellites can vary greatly depending on the presence of ground control points (GCPs). Without GCPs, accuracies are typically lower than 100 pixels, whereas when GCPs are plentiful, accuracy is higher than one pixel, demonstrating the potential for a large discrepancy between international optical satellites with the same image resolution. This study investigated a new method of geometric calibration for Optical-1 HR satellites. Experiments were conducted to demonstrate the positive effects on positioning accuracy achieved by the calibration method. After calibration by our method, a positioning accuracy of higher than one pixel was obtained with only a small number of GCPs, which is equivalent to the accuracy of advanced international optical satellites with the same image resolution.

Citation Download Citation

Yonghua Jiang, Guo Zhang, Wenchao Huang, and Xuwen Qin "On-orbit geometric calibration and validation of Optical-1 HR", Proc. SPIE 9669, Remote Sensing of the Environment: 19th National Symposium on Remote Sensing of China, 966906 (6 August 2015); https://doi.org/10.1117/12.2204721

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