CASSINI

作品数：33被引量：24H指数：3
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相关作者：张庆丰岳宝增刘海燕逄明贤李展更多>>
相关机构：暨南大学北京理工大学浙江理工大学北华大学师范分院更多>>
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Astrometric Reduction of Saturnian Satellites with Cassini-ISS Images Degraded by Trailed Stars
《Research in Astronomy and Astrophysics》2023年第3期85-92,共8页Qing-Feng Zhang Meng-Qi Liu Yan Li Lin-Peng Wu Zhi-Qiang Wang Li-Sha Zhu Zhan Li 
partly supported by the Joint Research Fund in Astronomy under cooperative agreement between the National Natural Science Foundation of China and Chinese Academy of Sciences(No.U2031104);the National Natural Science Foundation of China(No.62071201);the Natural Science Foundation of Guangdong Province(No.2023A1515011340)。
The Imaging Science Subsystem(ISS)mounted on the Cassini spacecraft has taken a lot of images,which provides an important source of high-precision astrometry of some planets and satellites.However,some of these images...
关键词：STARS TRAIL SATURN 
A new method for resolving phase ambiguity in radio interferometry using Earth rotation synthesis
《Research in Astronomy and Astrophysics》2021年第7期115-122,共8页Huan Zhou De-Zhen Xu Jian-Guo Yan Shao-Wu Chen Hai-Tao Li 
supported by the National Natural Science Foundation of China(42030110 and 61603008);the Innovation Group of Natural Fund of Hubei Province(2018CFA087)。
As a key technique in deep space navigation, radio interferometry can be used to determine the accurate location of a spacecraft in the plane-of-sky by measuring its signal propagation time delay between two remote st...
关键词：radio interferometry Earth rotation synthesis phase ambiguity differential phase delay Cassini mission Chang'E-3 mission 
Automatic removal of false image stars in disk-resolved images of the Cassini Imaging Science Subsystem被引量：1
《Research in Astronomy and Astrophysics》2020年第7期93-102,共10页Qing-Feng Zhang Zhi-Cong Lu Xiao-Mei Zhou Yang Zheng Zhan Li Qing-Yu Peng Shun Long Wei-Heng Zhu 
supported by the National Natural Science Foundation of China(Grant Nos.11873026 and U1431227);the Natural Science Foundation of Guangdong Province,China(Grant No.2016A030313092);the National Key Research and Development Project of China(Grant No.2019YFC0120102);the Fundamental Research Funds for the Central Universities(Grant No.21619413)。
Taking a large number of images,the Cassini Imaging Science Subsystem(ISS)has been routinely used in astrometry.In ISS images,disk-resolved objects often lead to false detection of stars that disturb the camera pointi...
关键词：methods:data analysis techniques:image processing techniques:telescopes stars:imaging 
Preliminarily study of Saturn’s upper atmosphere density by observing Cassini plunging via China’s deep space station被引量：1
《Research in Astronomy and Astrophysics》2020年第7期112-116,共5页Lue Chen Jin-Song Ping Xiang Liu Na Wang Jian-Feng Cao Guang-Ming Chen Ming-Yuan Wang Wen-Xiao Li Jian-Hui Zhang Yong-Qiang Chen Shi-Lei Yue Song-Tao Han Jing Sun 
supported by the National Natural Science Foundation of China(Grant Nos.41874183 and 11603001)。
When the Cassini spacecraft finally plunged into the Saturnian atmosphere on 2017 September15,China’s deep space telescope pointed to Saturn to observe Cassini and study the Saturnian upper neutral atmosphere.In this...
关键词：CASSINI SATURN Doppler velocity neutral atmosphere mass density 
Contour detection in Cassini ISS images based on Hierarchical Extreme Learning Machine and Dense Conditional Random Field
《Research in Astronomy and Astrophysics》2020年第1期83-92,共10页Xi-Qi Yang Qing-Feng Zhang Zhan Li 
partly supported by the National Natural Science Foundation of China(Grant Nos.U1431227 and 11873026);Natural Science Foundation of Guangdong Province,China(Grant No.2016A030313092);the Fundamental Research Funds for the Central Universities(Grant No.21619413)
In Cassini ISS(Imaging Science Subsystem)images,contour detection is often performed on disk-resolved objects to accurately locate their center.Thus,contour detection is a key problem.Traditional edge detection method...
关键词：techniques:image processing methods:data analysis ASTROMETRY 
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