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Analysis method and analysis device for warning spacecraft launching collision risks

A spacecraft launch and collision risk technology, applied in the aerospace field, can solve the problems of inaccurate collision risk prediction results and considerations

Active Publication Date: 2015-04-22
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

[0009] What the present invention aims to solve is the problem that the existing launch warning collision analysis method does not consider all rendezvous encounters encountered in the same launch window, resulting in inaccurate collision risk prediction results

Method used

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  • Analysis method and analysis device for warning spacecraft launching collision risks
  • Analysis method and analysis device for warning spacecraft launching collision risks
  • Analysis method and analysis device for warning spacecraft launching collision risks

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Embodiment Construction

[0027] As mentioned above, the collision probability obtained by the existing launch warning collision analysis method is for a single rendezvous event, that is, for an approach process between a spacecraft and a background object. Assuming that the rendezvous events that the spacecraft will encounter in a certain launch window are not related to each other, these events can be treated as mutually independent events.

[0028] Suppose A and B are two different events. If P(A)>0, P(B|A) can be defined. P(A) represents the probability of event A occurring, and P(B|A) represents the occurrence of event A. The probability of event B occurring under the condition . If the occurrence of event A has an impact on the probability of event B, then P(B|A)≠P(B), if this effect does not exist, then P(B|A)=P(B) , then there is P(AB)=P(B|A)P(A)=P(A)P(B), at this time, events A and B are called independent events. In general, let A 1 , A 2 ,...,A n is n events, if for any k (11 2 k ≤n, al...

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Abstract

The invention discloses an analysis method and analysis device for warning spacecraft launching collision risks. The analysis method includes the steps that S1, all intersection events of a spacecraft and a background object during launching are calculated; S2, for each intersection event, the possibility of collisions between the spacecraft and the background object is calculated; S3, the total possibility of collisions between the spacecraft and the background object is calculated. According to the analysis method and analysis device for warning the spacecraft launching collision risks, the collision risks which a certain launching window is going to encounter are evaluated through the total possibility of collisions, the multiple intersection events which the launching window is going to encounter at different intersection moments are fully taken into account, and the defect caused by one single intersection risk is overcome.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to a collision risk analysis method and an analysis device for spacecraft launch early warning. Background technique [0002] The distribution of space debris ranges from low orbit (LEO) to geosynchronous orbit (GEO). The dense area is just the commonly used spacecraft orbit. The average relative speed of debris and spacecraft can reach 10km / s. Once a collision occurs , the consequences are serious, especially on-orbit cataloged objects with a diameter greater than 10cm are a catastrophic threat to the safety of space activities such as manned spaceflight. [0003] In order to be able to predict and avoid collisions with other space objects during spacecraft launch and orbit operation in a timely manner, it is necessary to carry out launch warning work, calculate all cataloged objects that may be encountered during spacecraft launch flight and orbit operation, and jud...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 杨旭刘静于友成
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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