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Related Experiment Video

Updated: Jul 14, 2026

Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring
08:16

Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring

Published on: October 24, 2025

An Operational Data Management Approach for Helicopter-based Aerial Radiation Measurements in Emergency Preparedness

Young-Yong Ji1, Wanook Ji1, Kyungmin Kim1

  • 1Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea.

Health Physics
|July 13, 2026
PubMed
Summary

This study presents a reliable data management approach for helicopter radiation surveys, crucial for nuclear emergency response. The validated method ensures accurate dose rate mapping, enhancing preparedness and safety.

Keywords:
accidentsdose assessmentemergency planningnuclearoperational topics

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08:16

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Published on: October 24, 2025

Area of Science:

  • Nuclear science and engineering
  • Environmental monitoring
  • Radiation detection and measurement

Background:

  • Helicopter-based aerial radiation surveys are vital for nuclear emergency preparedness.
  • Effective data management, background correction, and quality control are critical for survey reliability.
  • Existing methods face challenges under complex operational conditions.

Purpose of the Study:

  • To propose and validate an operational data management approach for helicopter-based aerial radiation measurements.
  • To enhance the reliability and accuracy of dose rate assessments in nuclear emergencies.
  • To provide a practical framework for wide-area dose rate mapping.

Main Methods:

  • Utilized large-volume NaI(Tl) detectors for aerial radiation measurements.
  • Conducted field experiments at varying altitudes to assess background radiation and attenuation.
  • Employed altitude-profile maritime flights, linear regression, and Monte Carlo simulations for data correction.
  • Applied BG-index and Cs-index methods for radiation discrimination.

Main Results:

  • Successfully separated helicopter-related and altitude-dependent background radiation.
  • Derived altitude-dependent attenuation correction factors for accurate dose rate conversion.
  • Demonstrated statistical consistency between aerial and carborne survey data.
  • Validated the effectiveness of BG-index and Cs-index for cesium discrimination under challenging conditions.

Conclusions:

  • The proposed data management approach is practical and reliable for helicopter radiation surveys.
  • The validated methods improve the accuracy of wide-area dose rate mapping during nuclear emergencies.
  • This framework significantly contributes to nuclear emergency preparedness and response capabilities.