Method for constructing camouflage metasurface capable of resisting multi-static radar detection

Abstract

The invention discloses an anti-multistatic radar detection camouflage metasurface construction method. The method comprises the following steps: determining physical quantities representing target characteristic quantities at different radar observation angles; a metasurface is dispersed into a plurality of regulation and control modules in space, each regulation and control module is used for regulating and controlling radar echoes, and a dispersion angle is set according to the size of an actual regulation and control module array and the electric size of a metasurface unit; the metasurface units are utilized to establish each regulation and control module, and the metasurface is regulated and controlled to change the target characteristic quantity according to the inclination angle between the regulation and control modules and the physical quantity under different radar observation angles; beam deflection of harmonic waves is realized by changing the starting time of a time sequence between each row of units of the regulation and control module, so that the whole camouflage metasurface realizes feature camouflage in a set observation angle interval. The method has the advantages of being simple, efficient and flexible, and camouflage can be achieved at multiple observation angles in the space.

Description

Technical field [0001] The present invention relates to the field of hypersurface technology, in particular a camouflaged hypersurface construction method resistant to multi-base radar detection. Background [0002] With the continuous development of hypersurface units, the working state of the hypersurface can be controlled through electrical signals, and the purpose of controlling the various properties of reflected and transmitted electromagnetic waves can be achieved. Taking velocity camouflage as an example, the phase-tunable hypersurface element can change the reflected phase of the hypersurface array in the time dimension, and a certain size of Doppler frequency shift can be achieved in the frequency domain, which has good application prospects in the field of communication (Zhao, Jie, et al., etc. Programmable time-domain digital-coding metasurface for non-linear harmonic manipulation and new wirelesscommunication systems." National Science Review 6.2(2019):231-238.)。 In...

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Problems solved by technology

[0003] However, these methods only regulate the spectrum received by single base, and do not take into account the actual situation of bistatic radar detection, and because the above designs are all based on planes, they have great limitations in practical engineering applications

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