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Planetary entering branch autonomous navigation method based on radio tracking measurement

A tracking measurement and autonomous navigation technology, applied in the field of deep space exploration, can solve the problems of limited number of planetary orbiters and difficulty in ensuring real-time autonomous navigation, and achieve the effects of improving real-time performance, improving accuracy and convergence speed, and high measurement accuracy

Inactive Publication Date: 2013-12-11
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

However, the number of planetary orbiters is limited and constrained by the visible arc, it is still difficult to guarantee the real-time autonomous navigation of the probe during the whole process of entry

Method used

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  • Planetary entering branch autonomous navigation method based on radio tracking measurement
  • Planetary entering branch autonomous navigation method based on radio tracking measurement
  • Planetary entering branch autonomous navigation method based on radio tracking measurement

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Embodiment Construction

[0037] In order to better illustrate the purpose and advantages of the present invention, the content of the invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] This example is aimed at the autonomous navigation scheme based on radio measurement in the entry stage of Mars, using the radio measurement information between the probe, a Mars orbiter and three Mars surface radio beacons, combined with the extended Kalman filter for filter calculation, to achieve High-precision real-time autonomous navigation.

[0039] The specific implementation method of this example is as follows:

[0040] Step 1: Establishment of Mars entry segment state model

[0041] In the hypersonic entry stage, the probe is regarded as an uncontrolled flying particle, without considering the influence of strong winds and sandstorms on Mars, assuming that the atmosphere of Mars is stable, and ignoring the centripetal force and Coriolis effect cau...

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Abstract

The invention relates to a planetary entering branch autonomous navigation method based on radio tracking measurement and belongs to the field of deep space exploration. In order to improve the precision and the instantaneity of autonomous navigation of a planetary entering branch, the method realizes radio tracking measurement on a detector through an orbiter and a preset ground radio beacon, so that a planetary entering branch autonomous navigation scheme design is realized; according to the scheme, observation information is enriched; the method has the advantages of high enforcibility, high navigation precision and high instantaneity.

Description

technical field [0001] The invention relates to an autonomous navigation method for a planet entry stage based on radio tracking measurement, and belongs to the technical field of deep space exploration. Background technique [0002] With the continuous development of science and technology, sampling return and manned landing activities will become the inevitable trend of future planetary exploration missions, which requires the probe to have the ability of fixed-point landing (landing accuracy <100m), in order to successfully reach the scientific research value specific area. The landing of the probe went through three stages: entry, descent, and landing. Among them, the entry stage lasted the longest and had the worst environment. For planets with atmospheres, the initial state error of the entry point and the uncertainty of the aerodynamic environment bring great challenges to the navigation during the entry phase. The performance of navigation in the entry stage has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/24
Inventor 崔平远王硕徐瑞高艾朱圣英
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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