A Method for Autonomous Orbit Replanning of Space Vehicle

Abstract

The invention relates to an autonomous orbit reprogramming method of a spaceflight aircraft. The method comprises the following steps that spacecraft state information is acquired; out-of-tolerance of an orbit is calculated according to the state information; whether reprogramming is performed is judged according to the out-of-tolerance situation, flying according to the normal default orbit is performed if the out-of-tolerance situation does not occur, and ballistic reprogramming is performed if the out-of-tolerance situation occurs; the minimum i value corresponding to an accessible target orbit parameter in an orbit parameter library is judged according to the order of priority, and the preselected orbit corresponding to the minimum i value acts as a new target orbit; and the aircraft is controlled to fly according to the new target orbit. The spaceflight aircraft is creatively enabled to have the autonomous orbit reprogramming capacity so that self-rescuing under the fault state can be realized, the expected target is completed under the fault situation and the economic loss can be reduced and the safety risk can be reduced; and the manpower and material resource cost can be reduced through the autonomous mode without depending on ground equipment and personnel.

Description

technical field [0001] The invention relates to an autonomous orbit re-planning method for a space vehicle, belonging to the field of space vehicle guidance and control. Background technique [0002] Traditional space transport vehicles, such as launch vehicles, are launched once and left alone after take-off, that is, if they encounter engine failure or other unexpected situations after take-off, they can only resign themselves to their fate and cannot re-plan their orbits, so they do not have the ability to recover from failures , so in the case of failure, it will often cause greater economic losses, and even safety accidents will occur. Although some aircraft have the ability to re-orbit and have the function of failure recovery, (such as satellites, etc., when the rocket fails to send it into the predetermined orbit or there is a large orbital deviation, it will receive instructions from the ground to re-orbit. planning) but they are all re-planned based on the space-g...

AI Technical Summary

Problems solved by technology

[0002] Traditional space transport vehicles, such as launch vehicles, are launched at one time and left unattended after take-off, that is, if they encounter engine failure or other unexpected situations after take-off, they can only resign themselves to their fate and cannot re-plan their orbits, so they do not have the ability to recover from failures , so in the case of a fault, it will often cause a large economic loss, and even a safety accident

Although some aircraft have the ability to re-orbit and have the function of failure recovery, (such as satellites, etc., when the rocket fails to send it into the predetermined orbit or there is a large orbital deviation, it will receive instructions from the ground to inject and upload to re-orbit. planning) but they are all re-planned based on the space-ground communication mode, that is, orbit re-planning instructions are generated on the ground in the event of a fault, and uploaded to the aircraft through remote control. This method requires ground measurement and control equipment and a large number of technical personnel to support it. On the other hand, it is also limited by the measurement and control arc section and the space-ground communication situation. When some faults occur in the measurement and control blind area or when there is a space-ground communication failure, the aircraft will still be unable to receive ground commands and the failure cannot be rescued.

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