A novel interplanetary optical navigation algorithm based on Earth-Moon group photos by Chang’e-5T1 probe

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• 作者：Yanlong Bu^a ; ^b ; ^{buyanlong@yahoo.com} ; Qiang Zhang^c ; ^{gaowei_bacc@163.com} ; Chibiao Ding^b ; ^{cbding@mail.ie.ac.cn} ; Geshi Tang^a ; ^{tanggeshi@bacc.org.cn} ; Hang Wang^c ; ^{304217876@qq.com} ; Rujin Qiu^c ; ^{qiurjrj@163.com} ; Libo Liang^c ; ^{13161862824@163.com} ; Hejun Yin^d ; ^{hjyin@mail.ie.ac.cn}
• 关键词：Interplanetary voyage ; Optical navigation ; Two celestial bodies ; Sphere
• 刊名：Advances in Space Research
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：59
• 期：3
• 页码：907-915
• 全文大小：1165 K
• 卷排序：59

文摘

This paper presents an interplanetary optical navigation algorithm based on two spherical celestial bodies. The remarkable characteristic of the method is that key navigation parameters can be estimated depending entirely on known sizes and ephemerides of two celestial bodies, especially positioning is realized through a single image and does not rely on traditional terrestrial radio tracking any more. Actual Earth–Moon group photos captured by China’s Chang’e-5T1 probe were used to verify the effectiveness of the algorithm. From 430,000 km away from the Earth, the camera pointing accuracy reaches 0.01° (one sigma) and the inertial positioning error is less than 200 km, respectively; meanwhile, the cost of the ground control and human resources are greatly reduced. The algorithm is flexible, easy to implement, and can provide reference to interplanetary autonomous navigation in the solar system.