Detection and identification method, device and system based on information super-structure surface

Abstract

The invention discloses an electromagnetic wave detection and identification method based on an information super-structure surface, and the method employs the information super-structure surface to form a to-be-identified target, and a detector or a telemetering device emits electromagnetic waves to detect the to-be-identified target. The information super-structure surface modulates and shapes time-varying target scattering features through time-space coding, and the modulated scattering feature echo carries target information compiled according to an agreed frame structure; electromagnetic waves emitted by a detector or a telemetering device are irradiated to the information super-structure surface to form modulated scattering characteristic echo transmission information; when the detector or the telemetering device detects time-varying target scattering characteristic echoes of the information super-structure surface, the codes corresponding to the frame structures are identified through echo signals of the time-varying target scattering characteristic echoes so as to analyze the target information. According to the electromagnetic wave detection and identification method, passive detection and identification and information transmission are realized by shaping the scattering characteristics of the detected target, and the electromagnetic wave detection and identification method has the characteristics of higher safety and concealment, all weather, long distance and the like.

Description

technical field [0001] The invention belongs to the field of electromagnetic wave target detection and identification, in particular to a detection and identification method, device and system based on an information metasurface. Background technique [0002] Detection and identification technology is widely used in social life, production management, security management and even military fields. With the intersection and integration of highly developed Internet technology with mobile communication networks, Internet of Things and other technical fields, detection and identification technology is widely used. . The most common information identification card, such as IC card, namely integrated circuit card (Integrated Circuit Card), has the functions of readable and writable, large capacity, encryption function, reliable data recording, etc., but this technology is a contact card, and the identification information depends on Special equipment, and cannot be identified from...

AI Technical Summary

Problems solved by technology

However, traditional detectors or remote sensors, such as traditional radar, can only detect and locate targets. For example, radar detects targets such as aircraft and vehicles, and only recognizes the inherent characteristics of aircraft and vehicles, such as shape, orientation, and speed, and what is represented is the target. Scattering characteristics, only based on the inherent characteristics combined with intelligence or other methods to further analyze, can obtain part of the information of the target to be detected, and cannot directly identify or analyze the information carried by the target, such as the target ID number, the identity of the driver, etc., or even More in-depth information such as the scope of authority

Therefore, the current technical means are still unable to make the scattering characteristics of the target directly carry and transmit information

Images