Time-varying metasurface driven broadband radar jamming and deceptions.

Area of Science:

• Electromagnetic manipulation
• Metasurface technology
• Radar systems engineering

Background:

• Conventional radar jamming systems are complex, energy-intensive, and struggle with broadband environments.
• Miniaturization trends and enhanced radar performance necessitate more efficient and integrated solutions.
• Time-varying metasurfaces offer novel ways to control electromagnetic parameters temporally and spatially.

Purpose of the Study:

• To introduce a time-varying metasurface driven radar jamming and deception system (TVM-RJD).
• To overcome the limitations of conventional radar jamming techniques, including size, energy consumption, and broadband operation.
• To demonstrate a new approach for electromagnetic spatiotemporal manipulation in radar applications.

Main Methods:

• Utilizing a programmable bias voltage to control the time-varying metasurface.
• Altering the spectrum distribution of incident electromagnetic waves.
• Experimental validation of the TVM-RJD system's performance.

Main Results:

• The TVM-RJD system achieved an accuracy deviation of less than 0.368 meters.
• Demonstrated a high frequency conversion efficiency of up to 96.67%.
• Successfully deceived radar systems regarding target location.

Conclusions:

• The TVM-RJD system effectively overcomes the challenges of conventional radar jamming and deception.
• This technology enables advancements in electromagnetic illusion and radar invisibility.
• Highlights the potential of electromagnetic spatiotemporal manipulation for future applications.