Photonics-aided THz system for integrated secure communication and radar jamming.

Area of Science:

• Photonics
• Terahertz (THz) technology
• Integrated sensing and communication (ISAC)

Background:

• Secure communication and radar jamming are vital for intelligent transportation and electronic warfare.
• Existing systems often lack integrated security for both communication and sensing functionalities.

Purpose of the Study:

• To experimentally demonstrate a photonics-aided THz ISAC system for simultaneous secure communication and cooperative radar deception.
• To develop an integrated security protection scheme for both communication and sensing links.

Main Methods:

• Utilized a dual-encrypted orthogonal frequency-division multiplexing (OFDM) waveform.
• Implemented a communication-sensing-encryption (C-S-E) joint waveform.
• Employed chaotic encryption for secure communication and phase encryption for radar deception.

Main Results:

• Achieved a 105.8-Gbps data rate over a 3-m wireless link at 313.2 GHz.
• Demonstrated secure communication with a chaotic encryption key space of 10^114.
• Realized radar deception by generating false range targets and achieved 7-mm radial ranging resolution for multi-user detection.

Conclusions:

• The proposed scheme effectively degrades adversarial radar detection while enhancing communication security.
• The system is suitable for short-range, high-precision secure ISAC applications.
• This integrated approach advances the development of secure intelligent transportation and electronic warfare systems.