Method for estimating orbit control comprehensive efficiency and propellant consumption

Abstract

The invention relates to a method for estimating orbit control comprehensive efficiency and propellant consumption. Based on the in-orbit calibrated disturbance torque on a satellite by an orbit control thruster during working, the method for estimating the orbit control comprehensive efficiency and the propellant consumption calculates out unexpected influences on the position of an orbit when other thrusters compensate for the disturbance torque. According to the unexpected influences on the orbit, working time of the orbit control thruster is corrected and the orbit control comprehensive efficiency of the orbit control thruster of the satellite is worked out. Propellant consumption and propellant surplus of the orbital maneuver are estimated. According to the method for estimating the orbit control comprehensive efficiency and the propellant consumption, when the satellite performs orbital maneuver in the X direction of an orbital coordinate system, determination of control parameters and estimation of propellant consumption can be more accurate, the precision of orbital maneuver of a medium-to-high orbit satellite is effectively improved and the service life of the satellite in the orbit is prolonged.

Description

technical field [0001] The invention relates to a method for estimating the comprehensive efficiency of orbit control and the consumption of propellant, which is suitable for the field of orbital maneuvering by thrusters of medium and high orbit satellites. Background technique [0002] When satellites in medium and high orbits complete fixed-point acquisition, phase acquisition and position maintenance, they all use thrusters for orbital maneuvering. Since the navigation satellite is a networked constellation satellite, the number of drifting days in the limit circle is required to be large, and multiple satellites are in the multi-satellite co-orbit state, so it is necessary to ensure the phase relationship between the satellites in the inclined orbit, and at the same time ensure that the satellite orbit is adjusted. Abundance of propellant. [0003] A total of 12 10N thrusters are installed on the existing navigation satellites, which are divided into two branches, A and...

AI Technical Summary

Problems solved by technology

The accuracy of the overall efficiency of orbit control directly affects the calculation of orbit control effect and propellant margin, which in turn affects the estimation of satellite life

[0008] The existing estimation methods of satellite orbit control comprehensive efficiency and propellant consumption are all estimated based on experience. There are differences in the position of the center of mass, 10N thruster installation, and thrust of each satellite. The empirical value cannot guarantee an accurate reflection of each satellite. Specific conditions and accuracy, so now it is necessary to develop a method for estimating the overall efficiency of orbit control and propellant consumption with high precision during orbital maneuvering along the X-axis (tangential) of the orbital coordinate system

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