Target identification and positioning system and method based on physical fingerprint feature of device

A physical fingerprint and target recognition technology, applied in the field of information security, can solve problems such as difficulty in accurately distinguishing differences

Active Publication Date: 2017-11-21
NANJING INST OF CYBER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for different emission sources with the same modulation me...

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  • Target identification and positioning system and method based on physical fingerprint feature of device
  • Target identification and positioning system and method based on physical fingerprint feature of device
  • Target identification and positioning system and method based on physical fingerprint feature of device

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] The structure of the target recognition and positioning system based on the physical fingerprint feature of the device in this embodiment is as follows: figure 1 As shown, it includes an antenna array unit, a radio frequency front-end unit, a physical layer fingerprint processing unit, a device fingerprint library unit and a positioning unit. Wherein, the antenna of the antenna array unit is installed on the antenna port of the radio frequency front-end unit. The result processed by the RF front-end unit is sent to the physical layer fingerprint processing unit. The result processed by the physical layer fingerprint processing unit is sent to the device fingerprint library unit. In addition, the RF front-end unit can also send the processed signal to the positioning unit for processing.

[0030] The processing flow chart of the target...

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Abstract

The present invention discloses a target identification and positioning system and method based on the physical fingerprint feature of a device. The system comprises an antenna array unit, a radio frequency front-end unit, a physical layer fingerprint processing unit, a device fingerprint library unit and a positioning unit. The method comprises the following steps that: the radio frequency front-end unit performs signal scanning on a certain frequency band; when a signal on the required identification frequency band is scanned, the signal is preprocessed and a physical layer fingerprint feature is extracted on a to-be-identified signal; the obtained physical layer fingerprint feature is identified and compared with the physical layer fingerprint feature stored in a system library to determine whether the physical layer fingerprint feature has been already in the system library and to determine the identity of the device; and the positioning unit estimates the angle of incidence of the acceptation signal and the distance of the signal source. According to the system and method provided by the present invention, through the physical layer fingerprint feature, identification of the identity with a single target source is realized, and the system and method are applied to the related technologies based on the physical layer security.

Description

technical field [0001] The present application relates to the field of information security, and in particular to a target identification and positioning system and method based on physical fingerprint features of equipment. Background technique [0002] The traditional identification of electromagnetic radiation sources is mainly carried out through statistical methods, such as counting the frequency, bandwidth, modulation mode, etc. of the target signal. The electromagnetic radiation source identification method can achieve better identification results for wireless signals under different modulation methods. However, for different emission sources with the same modulation method, it is difficult to accurately distinguish each individual difference. When the electromagnetic radiation source emits a signal, it will inevitably introduce the physical characteristics of the device. This physical feature is like the "fingerprint" feature of the device, which is unique and dif...

Claims

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Application Information

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IPC IPC(8): G06F21/44H04W64/00
CPCG06F21/44H04W64/00
Inventor 彭林宁胡爱群李涛姜禹方昊
Owner NANJING INST OF CYBER TECH CO LTD
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