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A Rapid Analysis Method for the Probability of Lunar Probe Landing Safety

A probabilistic analysis and detector technology, which is used in instruments, image data processing, special data processing applications, etc., and can solve problems such as the inability to describe the topographical features of the pre-selected landing area in detail.

Active Publication Date: 2015-09-23
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology

For the Chang'e-3 landing mission, the statistical data of NASA's typical landform features cannot be completely consistent with the landform features of the pre-selected landing area of ​​Chang'e-3, so it can only provide a reference, and cannot describe the topographic features of the pre-selected landing area in detail

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  • A Rapid Analysis Method for the Probability of Lunar Probe Landing Safety
  • A Rapid Analysis Method for the Probability of Lunar Probe Landing Safety
  • A Rapid Analysis Method for the Probability of Lunar Probe Landing Safety

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Embodiment Construction

[0018] The purpose of the present invention is to provide a fast analysis method for the safety probability of lunar probe landing, such as Figure 1 ~ Figure 4 include:

[0019] Step 1. Simulate the 3D lander dynamics model landing on slopes of different slopes, and obtain the slope threshold that can cause the lander to overturn;

[0020] Keep increasing the angle of the lander's landing slope. When the lander starts to tip over, this angle can be considered as the slope threshold.

[0021] In this application, a lander is used to simulate a lunar probe, and the mass and shape of the lander are manufactured as a simulation of a lunar probe.

[0022] Step 2. Combine the NASA lunar surface terrain model with the Chang'e-2 survey data to generate a lunar surface terrain model of the landing area; the lunar surface terrain model of the landing area includes K square terrain and landform models of the same size and different slopes. The length of the side is equal to the smallest baseli...

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Abstract

The invention relates to a rapid analysis method for landing safety probability of a lunar probe. The rapid analysis method comprises the following steps: simulating landing of a lander on slopes of different angles to obtain slope threshold capable of turning over the lander; combining lunar surface landform models and detected data of Chang'e 2 to generate lunar surface landform models; dividing the lunar surface landform models into K landform models according to different slopes; performing N landing simulation experiments on each lunar surface landform model; analyzing according to the lunar surface data obtained by the Chang'e 2 to obtain a proportion Ci occupied by the slope ki in the lunar surface landform model; calculating a preliminary landing safety probability analysis result according to a full-probability formula. By using the technical scheme provided by the invention, a selection basis can be provided for a specific location for landing the lander on the lunar surface.

Description

Technical field [0001] The invention relates to a landing safety analysis method, in particular, the invention relates to a rapid analysis method for the landing safety probability of a lunar probe. Background technique [0002] The planetary surface soft landing technology is a key technology in the field of aerospace deep space exploration. The analysis of the impact of the topography of the planet's surface on the landing safety of the planetary probe is an important aspect of soft landing technology. It mainly analyzes the lander landing on the terrain with which characteristics can not overturn or analyzes the lander on a certain specified terrain The probability of not overturning, the results of this analysis can be used for the design, analysis and verification of the landing-related indicators of the probe, and provide strong technical support for the selection of the landing zone, and provide the lander with the autonomous landing safety zone recognition algorithm in a...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00G06T17/05
Inventor 李飞张延新孙泽洲张熇吴学英王闯马继楠黄俊
Owner BEIJING INST OF SPACECRAFT SYST ENG
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