The global lunar image of the first phase of Chinese Lunar Exploration Program is the first image that covered all over the surface of the Moon.It will serve as a critical foundation for succeeding exploration and sci...The global lunar image of the first phase of Chinese Lunar Exploration Program is the first image that covered all over the surface of the Moon.It will serve as a critical foundation for succeeding exploration and scientific research.In this paper,the acquisition,characteristics,and data quality of Chang'E-1 CCD image data are described in detail.Also described are the methodology and procedure of data processing.According to rule of planetary cartography,the image data have been processed,geometrically corrected,and then mosaicked and merged in a scale of 1:2.5 million.The results of data processing and charting show that the image data of Chang'E-1 CCD and their geometric precision meet the demand of charting a map in the scale of 1:2.5 million.The relative geometric positioning precision of the global image is better than 240 m,and the absolute geometric positioning precision is slightly better than that of the ULCN2005 and Clementine lunar basemap(V2.0).The plane positioning precision is approximately 100-1500 m.This global image proves to be the best global image of the Moon so far in terms of space coverage,image quality,and positioning precision.展开更多
Up to now, many lunar explorations concluded their scientific mission through the impact on the lunar surface. The prediction and positioning of impact sites are based on the extrapolated orbiting data together with t...Up to now, many lunar explorations concluded their scientific mission through the impact on the lunar surface. The prediction and positioning of impact sites are based on the extrapolated orbiting data together with the real time orbiting data and observations from ground based telescope provided by TT ＆ C System. As most lunar missions carded cameras onboard, a new method of positioning of CE-1 impact site is put forward. It is based on the CCD image data photographed during the con- trolled impact and the existing lunar terrain data. Test results from this new method also validate the published impact site po sition.展开更多
文摘The global lunar image of the first phase of Chinese Lunar Exploration Program is the first image that covered all over the surface of the Moon.It will serve as a critical foundation for succeeding exploration and scientific research.In this paper,the acquisition,characteristics,and data quality of Chang'E-1 CCD image data are described in detail.Also described are the methodology and procedure of data processing.According to rule of planetary cartography,the image data have been processed,geometrically corrected,and then mosaicked and merged in a scale of 1:2.5 million.The results of data processing and charting show that the image data of Chang'E-1 CCD and their geometric precision meet the demand of charting a map in the scale of 1:2.5 million.The relative geometric positioning precision of the global image is better than 240 m,and the absolute geometric positioning precision is slightly better than that of the ULCN2005 and Clementine lunar basemap(V2.0).The plane positioning precision is approximately 100-1500 m.This global image proves to be the best global image of the Moon so far in terms of space coverage,image quality,and positioning precision.
基金supported by National Natural Science Foundation of China (Grant No. 10903017)National High Technology Research and Development Program of China (Grant No. 2010AA122202)
文摘Up to now, many lunar explorations concluded their scientific mission through the impact on the lunar surface. The prediction and positioning of impact sites are based on the extrapolated orbiting data together with the real time orbiting data and observations from ground based telescope provided by TT ＆ C System. As most lunar missions carded cameras onboard, a new method of positioning of CE-1 impact site is put forward. It is based on the CCD image data photographed during the con- trolled impact and the existing lunar terrain data. Test results from this new method also validate the published impact site po sition.
