An on-orbit calibration method for aerodynamic shape differences between satellites in a formation satellite system

Abstract

An on-orbit calibration method for the aerodynamic shape difference between satellites in a formation satellite system. Through real-time relative measurement of formation satellites by GNSS, the real-time on-board data of the required formation main star and formation auxiliary satellite are obtained, and the star position of each satellite at the current moment is determined by calculation. On-orbit calibration of the aerodynamic shape of satellites based on the difference in aerodynamic shape between satellites solves the need for quantitative identification and evaluation of the difference in aerodynamic shape between formation satellites, and further improves the quality of on-orbit mission operation of formation satellites. The whole process of the method is clear, the method is simple and reliable, and the calculation accuracy is higher.

Description

technical field

[0001] The invention relates to an on-orbit calibration method for aerodynamic shape differences between satellites of a formation satellite system, and belongs to the technical field of formation satellites. Background technique

[0002] With the continuous successful application of formation satellite missions in orbit and the continuous increase in the complexity and demand of application tasks, the control tasks of formation satellite systems will face pressures such as high control accuracy, high control accuracy stability, and long life.

[0003] The factors affecting the control accuracy of short-range flying formation are complex, mainly including the measurement error of the measurement sensor, the error of the dynamic model, and the related error of the actuator. In fact, the impact of the existing research results on the difference in the aerodynamic shape between the satellites is often ignored as a small amount after making the assumption that th...

Images