Method for intrusion detection based on wireless signal characters

Abstract

The invention relates to a method for intrusion detection based on wireless signal characters, and belongs to the field of security and protection technology and wireless network application. According to the method for the intrusion detection, the state that whether object intrusion exists or not can be detected through the influence on the wireless link signal strength from an intrusion object. According to the intrusion detection algorithm, the signal strength information of all wireless links serves as input information, whether intrusion exists or not can be detected through the two-dimensional statistical properties of the mean value and the variance of the signal strength information. A system in which the method is adopted is composed of wireless scanning nodes, a wireless aggregation node, a general PC and the intrusion detection algorithm. The intrusion detection algorithm is installed in the general PC, and the wireless scanning nodes, the wireless aggregation node and the general PC are communicated wirelessly. The method is suitable for intrusion detection at wall shielding, dark environment and other severe environments. Whether a target intrudes or not can be detected through the change, caused by the fact that the intrusion object shields a wireless signal, of the wireless link signal strength.

Description

technical field [0001] The invention belongs to the field of security technology and wireless network application, and relates to an intrusion detection method based on wireless signal characteristics. Background technique [0002] Intrusion detection technology has broad application prospects in border monitoring, bank monitoring, core area monitoring and other fields. With the development of society, people pay more and more attention to security. It can be predicted that in the near future, intrusion detection technology will be widely used in military, industry and our daily life. [0003] Currently widely used intrusion detection technology is camera-based detection technology. Many scholars have carried out in-depth research on the use of cameras and image processing technology to achieve intrusion detection, such as: Zhu J, Lao Y, et al. "Object tracking in structured environments for video surveillance applications”, IEEE Transactions on Circuits and Systems for Vid...

AI Technical Summary

Problems solved by technology

However, the system layout is relatively cumbersome. The intrusion detection system requires good light conditions and cannot penetrate walls. At the same time, image processing technology involves privacy issues and is not suitable for some monitoring occasions.

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