Radiation distribution estimation with a non-directional detector using a plane source model*

Ziheng Chao, Ren Komatsu, Hanwool Woo, Yusuke Tamura, Atsushi Yamashita, Hajime Asama

Research output: Contribution to journalArticlepeer-review

Abstract

The Fukushima Daiichi nuclear disaster occurred during the Great East Japan Earthquake. Inside the reactor, materials with high radioactivity were scattered entirely, leading to a severe condition that restricted the number of measurement spots where the detector could be used. We propose a new system based on a plane model that uses fewer measurement spots and causes fewer estimation errors. We estimated the radiation source distribution using the maximum-likelihood estimation method optimized by gradient descent. Consequently, it was found that the proposed system, showed fewer errors than the previous system with a limited number of measurement spots.

Original languageEnglish
Pages (from-to)182-191
Number of pages10
JournalAdvanced Robotics
Volume36
Issue number4
DOIs
Publication statusPublished - 2022

Keywords

  • Radiation source distribution mapping
  • maximum-likelihood estimation
  • non-directional detector

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