Year: 2018
Type: article
Abstract: For multi-satellite launch mission, the velocity and direction of each satellite at separation may deviate from nominal value, which will introduce uncertainty to the distances between satellites after separation, and influence the safety as a result. In order to improve the satellite rocket separation safety of multi-satellite launch mission, importance measure analysis technology is employed to analyze the distance between satellites after separation. A new method is proposed to calculate the importance measures, numerical example shows that the efficiency of the proposed method is higher than the traditional Monte Carlo method and Saltelli’s method. For the situation that distance between satellites is too close after separation, importance measure analysis technology can be used to identify the input variables those have greater influence on the distances between satellites, then the distribution parameters of those input variables can be optimized, which can increase the minimum distance between satellites, and decrease its uncertainty as well. As a result, the safety during separation can be insured.
Source: Scientia Sinica Technologica
Authors: HaiYing HU, PingFu LI, Hua LI, Yong LIU, LongFei TIAN, Wu LIU
Language: English
Subfield: Statistics, Probability and Uncertainty
Field: Decision Sciences
Domain: Social Sciences
Open Access status: bronze
OpenAlex ID: W2931817869