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所属单位：航天学院

发表刊物：SENSORS

关键字：thermal-infrared camera spaceborne linear array whiskbroom imaging geometric model geometric calibration

摘要：The geometric calibration of a spaceborne thermal-infrared camera with a high spatial resolution and wide coverage can set benchmarks for providing an accurate geographical coordinate for the retrieval of land surface temperature. The practice of using linear array whiskbroom Charge-Coupled Device (CCD) arrays to image the Earth can help get thermal-infrared images of a large breadth with high spatial resolutions. Focusing on the whiskbroom characteristics of equal time intervals and unequal angles, the present study proposes a spaceborne linear-array-scanning imaging geometric model, whilst calibrating temporal system parameters and whiskbroom angle parameters. With the help of the YG-14-China's first satellite equipped with thermal-infrared cameras of high spatial resolution-China's Anyang Imaging and Taiyuan Imaging are used to conduct an experiment of geometric calibration and a verification test, respectively. Results have shown that the plane positioning accuracy without ground control points (GCPs) is better than 30 pixels and the plane positioning accuracy with GCPs is better than 1 pixel.

ISSN号：1424-8220

是否译文：否

发表时间：2018-01-01

合写作者：Xiao, Hui,汪清

通讯作者：盛庆红