Stand-off radiation source localization with multiple directional sensors

PDF

Authors
  1. Liu, C.
  2. Desrosiers, M.
  3. Drouin, P.-L.
  4. St-Jean, G.
  5. Waller, D.
Corporate Authors
Royal Military Coll of Canada, Kingston ONT (CAN);Communications Research Centre, Ottawa ONT (CAN);Defence Research and Development Canada, Ottawa Research Centre, Ottawa ON (CAN)
Abstract
Two algorithms have been developed to localize radioactive sources using a system of two or more directional radiation detectors. One is a point-of-closest-approach algorithm, while the other is a maximum likelihood algorithm. In order to test the performance of these algorithms, a variety of real and simulated scenarios have been studied with various gamma radiation sources. Two defence and security applications are of particular interest: one is the monitoring of a crossroads by a wireless radiation sensor network; the other is the deployment of a mobile radiation detection system that can differentiate a point source of radiation from an extended source of radioactive contamination. Results from both experimental and simulated data are presented. The maximum likelihood algorithm is shown to have superior performance (range and accuracy) for source localization. Comparing the ratios of detector counts for the mobile system application allows a differentiation of an extended, line source from a point source.
Keywords
radiation detection;source localization;directional radiation detectors
Report Number
DRDC-RDDC-2014-N40 — External Literature
Date of publication
01 Feb 2015
Number of Pages
3
DSTKIM No
CA040857
CANDIS No
801923
Format(s):
Electronic Document(PDF)

Permanent link

Document 1 of 1

Date modified: