This paper answers how multiple satellites are seen from the ground. This question is inspired by space-advertising, a public exhibition in the night sky using a dot matrix of satellites that are bright enough to be s...
The term space situational awareness(SSA),in a broad sense,refers to the comprehensive knowledge of the near-Earth space environment.It has gained increasing attention as the number of space objects,including the natu...
The authors acknowledge financial support from the National Natural Science Foundation of China(Nos.11902347 and 11972044).
The collision probability computation of space objects plays an important role in space situational awareness,particularly for conjunction assessment and collision avoidance.Early works mainly relied on Monte Carlo si...
support from the Guangdong Basic and Applied Basic Research Foundation Project(No.2020A1515110216);the support of the Cooperative Research Center for Space Environment Management(SERC Limited)through the Australian Government’s Cooperative Research Center Program when the work was initialized.
This paper presents a tool for the numerical propagation of high-fidelity astrodynamics,called PHiFA.The coupled orbit–attitude dynamics for space objects are modeled by considering various types of perturbative forc...
Project supported by the Russian Foundation for Basic Research(No.19-01-00205)。
This paper is a review,which focuses on our work,while including an analysis of many works of other researchers in the field of quaternionic regularization.The regular quaternion models of celestial mechanics and astr...
National Aeronautics and Space Ad-ministration(No.80NM0018D0004).
A growing interest in small body exploration has motivated research into the rapid char-acterization of near-Earth objects to meet economic or scientific objectives.Specifically,knowledge of the internal density struc...