ISACSecurity Physical Layer Defense, Anti-Spoofing Radar & RF Fingerprinting

ISACSecurity safeguards integrated sensing and communication networks against wireless eavesdropping, signal spoofing, and ghost target injection via directional modulation and physical layer device authentication.

ISACSecurity Zero-Trust Physical Layer Architecture

ISAC Core: Security Baseband Core — Directional Encryption & RF Fingerprinting

6G ISAC Nodes & Beamforming Subsystems

Directional Modulation Array
Artificial Noise Synthesizer
RF Hardware Fingerprinter
Anti-Spoofing Echo Correlator
Cryptographic Key Generator

Architectural Layers & Waveform Pipelines

Layer 1: Dual-Functional Waveform & Baseband (OTFS / OFDM-Radar / Fractional Fourier Transform / Ambiguity Function): Orthogonal Time Frequency Space (OTFS) modulation and fractional chirp synthesis achieving zero inter-carrier interference under severe Doppler spreads.
Layer 2: Massive MIMO & Beamforming Frontends (140 GHz D-Band / True-Time-Delay (TTD) / Hybrid Analog-Digital Beamforming): Sub-THz active phased array architectures with true-time-delay beam-squint mitigation, simultaneous communication data beams and pencil radar tracking lobes.
Layer 3: Radar Signal Processing & 4D Point Cloud (2D-FFT Range-Doppler / MUSIC AoA / CFAR Detection / Micro-Doppler Extraction): Sub-decimeter range and velocity resolution, constant false-alarm rate (CFAR) detection, and micro-Doppler biomechanical gait and drone propeller classification.
Layer 4: Network Sensing Orchestration & 3GPP Rel-19 (3GPP Rel-19 ISAC Core / Sensing Function (SF) / Reconfigurable Intelligent Surfaces (RIS)): Cell-free collaborative radar networks, dynamic time-frequency resource allocation balancing communication SLA against radar revisit time.

Sensing Telemetry & Benchmarks: <5 cm (Range Resolution) | 0.1 m/s (Velocity Precision) | <10 ms (Radar Frame Latency) | 3GPP Rel-19 (Global Standard)

Directional Cryptography & Anti-Spoofing Radar in ISACSecurity

Wireless communications are inherently broadcast, making them vulnerable to intercept, while radar systems face spoofing attacks via malicious signal repeaters and ghost target injection. ISACSecurity unifies communications cryptography with radar propagation physics, projecting artificial noise into non-target angular sectors while verifying the physical hardware fingerprints of every transmitting node.

Core Engineering Areas

Directional Modulation and Orthogonal Artificial Noise Injection — Transmitting confidential data constellations that correctly synthesize only along the precise target angle, while projecting orthogonal artificial noise in all other directions.
RF Transmitter Fingerprinting and Hardware Impairment Authentication — Authenticating wireless transceivers by characterizing microscopic silicon manufacturing imperfections in power amplifiers and local oscillators.
Anti-Spoofing Radar Echo Verification and Ghost Target Elimination — Neutralizing hostile DRFM repeaters attempting to inject non-existent radar targets or mask genuine physical obstacles.