하이브리드 신호처리 기반 능동형 핵 EMP-방사선 탐지 시스템 개발 = Development of Active Nuclear EMP?Radiation Detection System Based on Hybrid Signal Processing

다국어 초록 (Multilingual Abstract)

In a nuclear detonation environment, prompt gamma radiation and electromagnetic pulse (EMP) occur almost simultaneously and affect semiconductor circuits through different physical mechanisms. However, existing protection technologies have been developed separately, leaving a structural limitation under combined nuclear radiation and EMP threats.
This dissertation proposes a Nuclear EMP–Radiation Active Detector (NERAD) based on a hybrid signal-processing architecture. NERAD integrates a prompt gamma-ray sensor, a three-axis loop-antenna-based EMP sensor, and a high-speed signal-processing circuit that evaluates heterogeneous sensor outputs in real time and generates an immediate power cutoff control signal when a predefined threshold is exceeded.
Experimental results show that the gamma-ray sensing channel exhibits dose-rate characteristics consistent with conventional Nuclear Event Detectors, while EMP tests confirm that NERAD generates a stable cutoff signal within approximately 50 ns. System-level experiments further demonstrate that NERAD effectively protects digital and analog integrated circuits from EMP-induced malfunction and damage through rapid power isolation.

목차 (Table of Contents)

• 1. 서론 1
• 2. 핵 EMP 영향 5
• 2.1. 전자장비의 펄스 감마선 영향 및 방호 5
• 2.2. 전자장비의 EMP 영향 10
• 3. 능동형 핵 EMP-방사선 탐지 시스템 15
• 3.1. 제안된 탐지 시스템의 구조 및 동작 개요 16
• 3.2. 펄스 감마선 센서 18
• 3.3. EMP 센서 설계 34
• 3.4. 하이브리드 신호처리회로 설계 44
• 3.5. 탐지 시스템 모듈 제작 63
• 4. 시험평가 65
• 4.1. 전기적 특성 평가 65
• 4.2. 펄스 감마선 시험평가 68
• 4.3. EMP 시험평가 74
• 5. 전자장비 방호기능 실험 78
• 5.1. 전원차단회로 79
• 5.2. 방호기능 실험 결과 82
• 6. 결론 90
• 참고문헌 92