A method for autonomous fire orientation of Mars probe in large elliptical orbit

Abstract

The invention discloses a Mars self-orientating method of a large elliptical orbit Mars probe, to enable a Mars probe to accomplish three-axis stable control to Mars orientation under the condition that the Mars probe does not completely depend on ground monitoring and control and self-orientation sensors are not available. The method comprises the following steps of: carrying out corresponding short-term orbit recursion calculation according to the number of initial orbits and a reference coordinate system for describing the number of the orbits; adopting a simplified analysis method for Mars self-recursion, and adopting a high precision numerical method for orbit recursion on the ground; establishing a Mars orientation reference coordinate system by taking a Mars center-probe position vector as the Z-axis direction; and turning to a posture working mode for Mars-orientation after the Mars receives remote control instructions. Compared with the prior art, the Mars self-orientating method has the beneficial effects that under the condition that the ground communication has time delay and the self-orientation sensors cannot achieve engineering application, the Mars self-orientation control of the Mars probe is reliably realized through the orbit recursion and the establishment of the orientation reference coordinate system.

Description

technical field [0001] The invention relates to a Mars probe autonomous fire orientation technology. In the case that there is a delay in the deep space exploration communication and the autonomous navigation sensor cannot be applied in engineering, the orbit recursion and the establishment of the orientation reference coordinate system are reliable. Realize the autonomous control of the fire orientation of the Mars rover. Background technique [0002] During the flight phase of the Mars rover around Mars, in addition to the requirements for the attitude control platform such as directional energy to the sun and communication to the ground, in order to realize scientific exploration such as taking pictures of Mars, the attitude control platform must have the function of directional control of Mars. [0003] The existing domestic Mars rover attitude control platform lacks relevant technologies as a reference. In order to realize the ground orientation function, the near-Eart...

AI Technical Summary

Problems solved by technology

However, in China at this stage, it is difficult to guarantee real-time orbit determination on the ground, and autonomous navigation sensors such as navigation cameras or ultraviolet sensors are still in the pre-research stage.

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