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An evaluation method for space-based sensor observation combination for emergency tasks

A sensor and task technology, applied in the direction of instruments, special data processing applications, electrical digital data processing, etc., can solve the problems of lack of space-based sensor observation combination science and quantitative evaluation methods, and achieve an easy-to-achieve effect

Inactive Publication Date: 2016-04-06
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

For emergency missions with comprehensive requirements of time-space-frequency and dynamic evolution characteristics, there is a lack of a scientific and quantitative evaluation method for space-based sensor observation combination

Method used

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  • An evaluation method for space-based sensor observation combination for emergency tasks
  • An evaluation method for space-based sensor observation combination for emergency tasks
  • An evaluation method for space-based sensor observation combination for emergency tasks

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with embodiment.

[0035] The present invention provides a space-based sensor observation combination evaluation method oriented to emergency tasks, using different performances of different space-based sensors to determine the observation combination scheme of space-based sensors, specifically including the following steps:

[0036] (1) Establish the problem model XV=R of space-based sensor observation combination:

[0037] Among them, the vector R=[r 1 ,...,r i ,...,r m ] is the observation requirement of the emergency task, m is the number of observation elements, r i Indicates the i-th observation element, i∈[1,m], and the content can be time, resolution, coverage, etc.; the observation elements are divided into three types: clear requirements, fuzzy requirements, and both clear and fuzzy requirements; clear Requirements such as "time before 18:00", "coverage rate above 80%", "resolution higher t...

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Abstract

The invention provides an emergency-task-oriented space-based sensor observation combination evaluation method. The emergency-task-oriented adaptability is solved by using different observation performance of each space-based sensor, so the observation combination scheme of the space-based sensor is evaluated, a space-based sensor observation combination problem model XV=R is built, (2n-1) kinds of space-based sensor optional combinations except the none selection are removed in an exhaustion way, a performance matrix is utilized for respectively calculating the observation performance of each space-based sensor optional combination on each observation factor, the adaptability of the space-based sensor optional combination to the observation performance of each observation factor is calculated, the assignment to the weight of each observation factor is carried out according to the attention degree of each observation factor, the integral adaptability of the space-based sensor observation combination to the emergency task observation requirements is calculated, and finally, the combination with the optimum integral adaptability is selected from (2n-1) kinds of space-based sensor optional combinations and is used as the final space-based sensor observation combination scheme.

Description

technical field [0001] The invention relates to an emergency mission-oriented space-based sensor observation combination evaluation method, which belongs to the technical field of smart earth observation. Background technique [0002] According to statistics, there are currently more than 160 space-based satellites in orbit in the United States and 60 in China, and China expects to have more than 120-140 in 2020. They carry different numbers and types. sensor. However, in the face of specific emergency tasks, the world's space-based satellite sensors present a situation of "more" and "less". In order to better couple the existing space-based sensor observation systems together and realize collaborative observation, it is necessary to establish a scientific evaluation method for space-based sensor observation combination for emergency tasks, so that the space-based sensor observation system for emergency observation is scientific and reasonable. planning. [0003] In respo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 胡楚丽刘一冬
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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