Onboard attitude compensation method and system for thrust vector deviation of deep space probe

Abstract

The invention provides an onboard attitude compensation method and system for thrust vector deviation of a deep space probe. The method comprises the steps: M1, calculating the attitude compensation correction during orbit control according to a result of engine thrust direction calibration; M2, the attitude compensation correction amount in the orbit control period is injected to a device to be implemented. The method is used for compensating the thrust direction deviation of the spacecraft thruster so as to improve the orbital transfer precision.

Description

technical field

[0001] The invention relates to the field of attitude dynamics, in particular to a method and system for on-board attitude compensation of thrust vector deviations of deep space probes. Background technique

[0002] In order to achieve the goals of breaking away from the gravity of the earth, entering the cruising orbit or entering the inter-satellite transfer orbit, re-entering the planet, and flying around the star, the deep space probe needs to change its orbit multiple times to meet the requirements of saving fuel and correcting the accuracy of orbiting. At the same time, in key orbital changes such as re-entry into the atmosphere and planetary capture, there is usually only one chance to change orbits, and high orbital control accuracy is required to ensure follow-up missions. During the planet capture phase, the probe needs to be ignited and decelerated. The deviation of the ignition direction is very likely to cause the probe to fail to form an orbit, ...

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