An Anti-jamming Composite Online Guidance Method for Mars Lander Atmospheric Entry Section

一种着陆器、进入段的技术，应用在航空航天领域，能够解决制导方法精确性影响、着陆器模型精度要求极高、自主性弱等问题，达到保证着陆精度、自主性强、抗干扰性强的效果
CN105867402BActive Publication Date: 2019-05-07BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2019-05-07

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Abstract

The invention provides an anti-interference composite online guidance method for the atmospheric entry section of a Mars lander. The guidance method comprises the following steps: a. Building a dynamic model of the atmospheric entry section of the Mars lander; introducing the dynamic model of the atmospheric entry section of the Mars lander Mars atmospheric density uncertainty interference; b, construction interference observer, the interference observer estimates the Mars atmospheric uncertainty interference; c, design prediction-correction guidance law, the prediction-correction guidance law The undetermined parameters of the roll angle magnitude are updated; d, the interference observer described in step b is compounded with the prediction-correction guidance law described in step c to obtain the anti-jamming composite guidance law; the anti-jamming composite guidance law The Martian atmospheric uncertainty disturbance is compensated by the estimation of the Martian atmospheric uncertainty disturbance.
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Description

technical field

[0001] The invention relates to the field of aerospace technology, in particular to an anti-interference composite online guidance method for the atmosphere entry section of a Mars lander. Background technique

[0002] In recent years, with the rapid development of aerospace technology, deep space exploration has become a space activity that the world is eager to carry out. In the process of human deep space exploration, the most important task is to explore life, and Mars, as the closest star to the earth that may have signs of life, has also become the first stop for human beings to start their deep space journey. Judging from the Mars missions that humans have already carried out, future Mars exploration will have higher and higher requirements for landing accuracy. However, considering the distance between Mars and the Earth, as well as the unforeseen uncertainties on Mars, it has brought great challenges to the improvement of the accuracy of Mars landin...

Claims

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