Method for deciding agile satellite earth observation task pretreatment scheme

A kind of earth observation and satellite technology, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc.

CN104143042AInactive Publication Date: 2014-11-12NAT UNIV OF DEFENSE TECH
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Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-11-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for deciding an agile satellite earth observation task pretreatment scheme. A new target area decomposition and combination method is provided; a multi-attribute utility function is constructed according to a pretreatment method; task scheduling pretreatment schemes are sorted and selected according to the multi-attribute utility function method; a point target describing method based on 'moment-gesture' and a region target feature describing method based on time gesture vectors are provided; the describing method is utilized to provide a target decomposition and combination method in the pretreatment; for different parameter generating schemes, the optimal treatment scheme is selected through the multi-attribute utility function method.
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Description

technical field

[0001] The invention relates to a method for decision-making of an agile satellite earth observation task preprocessing scheme. Background technique

[0002] Agile Earth Observation Satellite is a new generation of Earth Observation Satellite in my country. It has three-degree-of-freedom attitude maneuverability and high resolution. It is the development direction of Earth Observation Satellite and has important military and civilian values. Compared with traditional satellites, agile satellites can image area targets in a single pass, which improves the ability to complete the mission, but also makes mission planning more complicated.

[0003] The preprocessing of agile satellite task scheduling is a basic link of problem solving. Due to the small width of agile satellites, each imaging is a strip with a fixed field of view width. For regional targets, it is necessary to use framed imaging. Therefore, the premise of agile satellite mission planning is to d...

Examples

Embodiment Construction

[0025] Firstly, a brief summary of the multi-attribute utility function theory is given, and then the specific steps of using the multi-attribute utility function method are given.

[0026] 1. Multi-attribute utility function theory

[0027] The multi-attribute utility function is defined as:

[0028]

（1）

[0029] in Can be a multi-attribute utility function, total utility, social welfare function or total index; is each attribute The single-attribute utility function of , is the first level of an attribute.

[0030] In order to construct the utility function, we need to ensure that each attribute satisfies preference independence and utility independence. "Preference independence" means that the decision maker's preference for a value of an attribute has nothing to do with the values ​​of other attributes. "Utility" can be understood as the preference A quantification, "utility independence" is similar to "preference independence", which means ...