Attitude and orbit control data analysis method based on decision tree

A data analysis and decision tree technology, applied in the field of satellite data analysis, which can solve problems such as uncollected data, no explanation or report found.

Active Publication Date: 2016-05-11
SHANGHAI SATELLITE ENG INST
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[0006] At present, there is no description or report of the similar technology of t

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  • Attitude and orbit control data analysis method based on decision tree

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[0022] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0023] The invention relates to satellite attitude and orbit control data analysis, and discloses an attitude and orbit control data analysis method based on a decision tree. Including attitude and orbit control data preprocessing, complete telemetry data deduplication, telemetry data sorting, telemetry data extraction, telemetry data outlier elimination through data preprocessing; attitude and orbit control system hierarchical modeling, according to "satellite-subsystem-standalone -Telemetry” for telem...

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Abstract

The invention provides an attitude and orbit control data analysis method based on a decision tree. The method comprises the following steps: attitude and orbit control data preprocessing, i.e., finishing remote measurement data deduplicating, remote measurement data sequencing, remote measurement data extraction and remote measurement data outlier rejection through the data preprocessing; hierarchical modeling of an attitude and orbit control, i.e., establishing an information and control flow chart of the attitude and orbit control, determining remote measurement variables related to current faults of the attitude and orbit control, and taking the variables as input variables for decision tree analysis; establishing a flow chart of the decision tree analysis; and decision tree modeling, i.e., creating a decision tree C5.0 algorithm model, defining a model name in the model, boosting algorithm test frequency, and trimming attributes and a minimum recording number of each sub branch. The method provided by the invention solves the problem of difficulties in satellite attitude and orbit control complex data analysis and has a certain guidance effect on satellite fault identification, diagnosis and anticipation.

Description

technical field [0001] The invention relates to a satellite data analysis method, in particular to an attitude and orbit control data analysis method based on a decision tree. Background technique [0002] With the rapid development of the aerospace industry, the number of satellites in our country is increasing day by day, and the total number of satellite failures is also increasing year by year. According to statistics, in 2013 alone, there were nearly 550 abnormal or malfunctioning events among more than 90 satellites. Attitude and orbit control subsystem failures accounted for about 80% of the total. [0003] The satellite attitude and orbit control system is the core of the satellite platform. It ensures that the satellite can accurately operate according to the designed attitude and orbit, and is the basic guarantee for the satellite to complete its tasks and missions. The faults of satellite attitude and orbit control systems are complex, time-varying, sudden, and c...

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Application Information

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IPC IPC(8): G05D1/08
CPCB64G1/244
Inventor 范慧芳杨天社刘扬张国勇周军王森
Owner SHANGHAI SATELLITE ENG INST
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