Rapid analysis method for landing safety probability of lunar probe

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

Active Publication Date: 2013-12-11
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

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  • Rapid analysis method for landing safety probability of lunar probe
  • Rapid analysis method for landing safety probability of lunar probe
  • Rapid analysis method for landing safety probability of lunar probe

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Embodiment Construction

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

[0019] Step 1, simulating the three-dimensional lander dynamic model to land on slopes with different slopes to obtain the slope threshold that can cause the lander to overturn;

[0020] The angle of the slope on which the lander lands is continuously increased, and when the lander begins to tip over, the angle can be considered as the slope threshold.

[0021] In this application, the lander is used to simulate the lunar probe, and the quality and shape of the lander are all simulated by the manufacture of the lunar probe.

[0022] Step 2. Combine the NASA lunar surface topography model with the Chang'e-2 detection data to generate the landing area lunar surface topography model; the landing area lunar surface topography model includes K square topography models with the same size and different slopes. ...

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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 of the landing safety probability of a lunar probe. Background technique [0002] 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 on the surface of the planet on the landing safety of the planetary probe is an important aspect of the soft landing technology. It is mainly to analyze the characteristics of the landform on which the lander lands without tipping over or to analyze the landing of the lander on a certain designated terrain. The probability of not falling over, the results of this analysis can be used in the design, analysis and verification of the landing related indicators of the probe, and provide strong technical support for the selection of the landing area, and provide support for the autonomous landing safet...

Claims

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Application Information

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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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