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Anomaly detection method and system

An anomaly detection and to-be-detected technology, applied in the detection field, can solve the problem of high false detection rate of anomaly detection of complex hopping data of space payloads, improve accuracy and timeliness, avoid serious faults or accidents, and solve abnormal detection errors. The effect of high detection rate

Inactive Publication Date: 2018-04-27
TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an anomaly detection method and system that can effectively solve the problem of high misdetection rate in abnormal detection of space payload complex jump data for the deficiencies of the prior art

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Embodiment Construction

[0069] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0070] Such as figure 1 As shown, it is a schematic flow chart of an anomaly detection method provided by an embodiment of the present invention. The anomaly detection method can be used for anomaly detection of complex electromechanical equipment and space payloads in the aerospace field, and can be specifically used to detect the work of equipment. parameters, etc., the anomaly detection method includes:

[0071] S1. Obtain a multi-dimensional time series matrix representing the normal state of the object to be detected.

[0072] It should be noted that the object to be detected can be a space payload, for example, a multispectral scanner, an infrared scanner, a synthetic aperture radar, a microwave radiometer, a...

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Abstract

The invention discloses an anomaly detection method and an anomaly detection system, which relate to the field of detection. The anomaly detection method comprises the steps of: acquiring a multi-dimensional time sequence matrix used for representing a normal state of an object to be detected; establishing a two-dimensional self-organized mapping feature network structure, and performing iterativetraining on the multi-dimensional time sequence matrix by means of the two-dimensional self-organized mapping feature network structure, so as to obtain a multivariable state estimation memory matrix; and performing anomaly detection on data to be detected of the object to be detected according to the multivariable state estimation memory matrix. The anomaly detection method and the anomaly detection system provided by the invention improve the precision of anomaly detection of complex hop data, and can effectively solve the problem of high erroneous detection rate of anomaly detection of thecomplex hop data.

Description

technical field [0001] The invention relates to the detection field, in particular to an abnormality detection method and system. Background technique [0002] In recent years, scientific research institutions at home and abroad have carried out a lot of research on technologies related to abnormal detection of aerospace equipment, for example, the Orca tool and IMS tool developed by NASA (National Aeronautics and Space Administration, National Aeronautics and Space Administration, USA). Orca is a tool for multivariate data mining. It mainly detects the abnormality of aerospace equipment by calculating the distance between adjacent points, while IMS uses the clustering method to cluster the data with normal status detection to identify subsequent abnormal data. Both of them are applied Unknown anomaly mining for space equipment such as earth observation satellites. [0003] However, both of the above tools have certain disadvantages. The space payload of aerospace equipmen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06N3/08
CPCG06N3/08G06F18/23213G06F18/24137G06F18/251
Inventor 宋磊郭丽丽王会平李叶金山饶骏阎镇段江永许乐乐
Owner TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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