ISACSafety RF Exposure Compliance, SAR Monitoring & Beam Nulling
ISACSafety ensures human electromagnetic safety in multi-gigabit high-power 6G ISAC deployments, actively monitoring Specific Absorption Rate (SAR) limits and projecting real-time RF nulls around detected people.
ISACSafety Real-Time SAR Mitigation Architecture
ISAC Core: SAR Safety Core — Human Presence Tracking & Power Nulling
6G ISAC Nodes & Beamforming Subsystems
- Human Radar Micro-Doppler Detector
- Spatial EIRP Safety Governor
- Dynamic Beam Pattern Nuller
- ICNIRP 2020 Regulatory Engine
- Continuous Multi-Band Exposure Log
Architectural Layers & Waveform Pipelines
- 第一层：通感一体化双功能波形与数字基带 (OTFS / OFDM-Radar / Fractional Fourier Transform / Ambiguity Function): 基于正交时频空（OTFS）调制与分数阶傅里叶变换的波形生成，在高速多普勒频移环境下实现零子载波间干扰（ICI）。
- 第二层：大规模 MIMO 有源相控阵与混合波束赋形 (140 GHz D-Band / True-Time-Delay (TTD) / Hybrid Analog-Digital Beamforming): 太赫兹 D 频段有源相控阵体系，结合真实时间延迟（TTD）消除波束色散，支持超窄高增益雷达跟踪波束与宽角通信波束并行覆盖。
- 第三层：回波数字信号处理、2D-FFT 谱估计与 4D 点云成像 (2D-FFT Range-Doppler / MUSIC AoA / CFAR Detection / Micro-Doppler Extraction): 亚分米级测距与测速分辨率、恒虚警率（CFAR）目标检测、基于微多普勒特征的步态生物识别与无人机旋翼特征实时分类。
- 第四层：蜂窝网络通感资源编排与 3GPP Rel-19 核心网 (3GPP Rel-19 ISAC Core / Sensing Function (SF) / Reconfigurable Intelligent Surfaces (RIS)): 无蜂窝协作雷达感知网络、智能超表面（RIS）反射信道赋能，动态平衡通信吞吐量 SLA 与雷达感知刷新率需求。
Sensing Telemetry & Benchmarks: <5 cm (测距分辨率) | 0.1 m/s (测速精度) | <10 ms (雷达帧刷新时延) | 3GPP Rel-19 (全球行业标准)
ICNIRP Human Exposure Limits & Real-Time Beam Nulling in ISACSafety
As 6G cellular networks push into higher frequencies (FR2 mmWave and FR3 upper mid-band) with massive antenna arrays and high equivalent isotropically radiated power (EIRP), strict human electromagnetic safety regulations must be observed. ISACSafety leverages integrated radar capabilities to identify pedestrian presence, human bodies, and biological targets, dynamically steering RF energy away while sustaining connectivity.
Core Engineering Areas
Technical Publications