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Method and system for solving space-time prism in continuously changing off-road environment

A space-time, prism technology, applied in the field of target object reachable domain analysis, can solve problems such as differences, imperfections, unscientific calculation results, etc., to achieve the effect of low computational output complexity, reduced computational load, and good application prospects

Pending Publication Date: 2022-03-25
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU +1
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Problems solved by technology

However, the uncertainty of the space-time prism does not only come from the influence of changes in travel speed. The complexity of human activities and the complexity of environmental changes will lead to uncertainties in departure and end times, uncertainties in activity arrangements, and traffic conditions. Uncertainty, etc., eventually lead to fluctuations in the reliability of the analysis results, the results are different from the actual
In the isotropic and uniform velocity assumptions of the classic space-time prism theory, one problem is ignored. The influence of the environment on the velocity is mostly evaluated in a static environment, that is, the velocity is generally only related to the position and direction of travel, and has nothing to do with time, so it cannot be reflected. The environment changes continuously over time, and the calculation results are unscientific and imperfect

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  • Method and system for solving space-time prism in continuously changing off-road environment
  • Method and system for solving space-time prism in continuously changing off-road environment
  • Method and system for solving space-time prism in continuously changing off-road environment

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and technical solutions.

[0033] In the overall evaluation of the task environment by using the algorithm, the minimum time path planning algorithm of the existing predictable environment can solve the shortest time path problem of the continuously changing environment, and provide a reference for the shortest time required for task evaluation, but it cannot solve some problems related to the environment's impact on the task. The overall evaluation of adaptability, including but not limited to the completion of the following evaluation items: which time and space the task bearer may appear in; when to start at the latest; from which areas the passing time is more abundant, and from which space is more abundant; what is the earliest space positio...

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Abstract

The invention belongs to the technical field of reachable domain analysis, and particularly relates to a method and a system for solving a space-time prism in a continuously changing off-road environment. Constructing a task-oriented space-time comprehensive environment influence model used for describing a space-time environment influence rule in the space-time coordinate system; through rasterization processing and solving, predicting the shortest time of moving along a straight line segment in the space-time by using a space-time trajectory tracking algorithm, and searching and acquiring upper and lower pyramid surfaces of a space-time prism for describing a task execution process in combination with the shortest time cost; according to the space-time areas corresponding to the surfaces of the upper pyramid and the lower pyramid, a target space-time range possibly appearing in task execution is obtained, and the target space-time range serves as the solved space-time prism. According to the method, solving of the space-time prism in a time-space continuous change environment is achieved, then the space-time activity range of cross-country people in the air during continuous change is obtained, and the method is more scientific and reasonable and conforms to the actual situation.

Description

technical field [0001] The invention belongs to the technical field of target object reachable domain analysis, and in particular relates to a method and system for solving a space-time prism in a continuously changing off-road environment. Background technique [0002] The space-time environmental effectiveness assessment for combat missions is not a complex problem that any domain knowledge can solve alone, but involves many environmental problems, analysis methods, solutions, and knowledge in related fields. The main purpose of environmental impact analysis is to analyze the objective influence laws of environmental factors. The corresponding analysis conclusions are not directly related to specific tasks, but the results can provide support for further comprehensive impact analysis on specific tasks. It involves a large number of algorithms related to terrain, soil quality, vegetation, meteorology and other environments. The comprehensive impact analysis of tasks is bas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q10/06G06F17/18G06F119/02
CPCG06F30/20G06Q10/0639G06F17/18G06F2119/02
Inventor 吴传均管凌霄彭伟锋刘潇陈刚夏青
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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