Abstract
Abstract. Starting from the lunar observation requirements of the GF-4 satellite, the main index such as the resolution, the imaging field, the reflect radiance and the imaging integration time are analyzed combined with the imaging features and parameters of this camera. The analysis results show that the lunar observation of GF-4 satellite has high resolution, wide field which can image the whole moon, the radiance of the pupil which is reflected by the moon is within the dynamic range of the camera, and the lunar image quality can be guaranteed better by setting up a reasonable integration time. At the same time, the radiation transmission model of the lunar radiation calibration is trace and the radiation degree is evaluated.
Highlights
GF-4 satellite, which is the first high resolution geostationary orbit satellite in the national high resolution earth observation system, is mainly used in disaster reduction, meteorology, forestry and environment and other fields, and it has great application value in national security, environmental monitoring, weather forecast and so on
The lunar resolution can be calculated from the Instantaneous field angle of the camera and the distance between the GF-4 satellite and the moon, which are in a certain interval of [327 thousand, 441 thousand]
The observational radiance dynamic range of the GF-4 camera is shown in the following table
Summary
The lunar resolution can be calculated from the Instantaneous field angle of the camera and the distance between the GF-4 satellite and the moon, which are in a certain interval of [327 thousand, 441 thousand]. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XLII-3, 2018 ISPRS TC III Mid-term Symposium “Developments, Technologies and Applications in Remote Sensing”, 7–10 May, Beijing, China to the lunar orbit and the GF-4 satellite orbit. We select a specific value of 384 thousand km to evaluate the average lunar resolution, the result is showed in the following formula
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