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Emergency-task-oriented space-based sensor observation combination evaluation method

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: 2014-12-17
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

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  • Emergency-task-oriented space-based sensor observation combination evaluation method
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  • Emergency-task-oriented space-based sensor observation combination evaluation method

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Embodiment Construction

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

[0035] The present invention provides an emergency task-oriented space-based sensor observation combination evaluation method, which utilizes different performances of different space-based sensors to determine an observation combination scheme of the space-based sensor, which specifically includes the following steps:

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

[0037]Among them, the vector R=[r 1 ,...,r i ,...,r m ] is the observation requirement of the emergency mission, m is the number of observation elements, ri represents the i-th observation element, i∈[1,m], the content can be time, resolution, coverage, etc.; the observation elements are divided into explicit requirements , fuzzy requirements, and both explicit and vague requirements; explicit requirements such as "time before 18:00", "over 80% coverage", "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 task-oriented space-based sensor observation combined evaluation method, which belongs to the technical field of earth observation of smart earth. Background technique [0002] According to statistics, there are more than 160 in-orbit space-based satellites in the current integration of air-space-earth-earth observation, and there are more than 160 in the United States and 60 in China. China is expected to have more than 120-140 satellites in 2020. sensor. However, in the face of specific emergency tasks, the global space-based satellite sensors present a situation of "more" and "less". In order to better couple the existing space-based sensor observation systems and realize collaborative observation, it is necessary to establish a scientific and emergency task-oriented space-based sensor observation combination evaluation method, so that the space-based sensor in emergency observation can be scientific and reason...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 胡楚丽刘一冬
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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