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[en] Airborne gamma ray survey system has been developed by IBRAE for radiation safety and emergency response tasks of EMERCOM. Basic design decisions of the system were verified during actual tests of constructed prototypes for manned and unmanned aircraft. For data processing tasks background modeling method, based on least squares fitting and pulse response function calculations, was developed. It uses count rates in several energy windows corresponding to photo peaks of natural radioactive nuclides and experimental assessments of terrestrial and spectrometer construction background. Application of this method may significantly increase sensitivity of the system and stability of results with relation to background variations. It is also possible to use it for radionuclide concentrations evaluation (for example Cs 137). Among many others appropriate function is included in designed program software.
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Kundas, S.P.; Poznyak, S.S. (International A.Sakharov environmental univ., Minsk (Belarus)); Ministerstvo obrazovaniya Respubliki Belarus', Minsk (Belarus); Ministerstvo prirodnykh resursov i okhrany okruzhayushchej sredy Respubliki Belarus', Minsk (Belarus); Departament po likvidatsii posledstvij katastrofy na Chernobyl'skoj AEhS Ministerstva po chrezvychainym situatsiyam Respubliki Belarus', Minsk (Belarus); Obshchestvennyj sovet Bazovoj organizatsii po ehkologicheskomu obrazovaniyu stran SNG, Minsk (Belarus); Belorusskij respublikanskij fond fundamental'nykh issledovanij, Minsk (Belarus); Illinois univ., Chicago, (United States); Germany economical group in Belarus, Berlin (Germany); International A. Sakharov environmental univ., Minsk (Belarus); 349 p; ISBN 978-985-551-002-5; 
; May 2011; p. 189-191; 11. international scientific conference 'Sakharov readings 2011: environmental problems of the XXI century'; 11. Mezhdunarodnaya nauchnaya konferentsiya 'Sakharovskie chteniya 2011 goda: ehkologicheskie problemy XXI veka'; Minsk (Belarus); 19-20 May 2011; 6 refs., 3 figs.
; May 2011; p. 189-191; 11. international scientific conference 'Sakharov readings 2011: environmental problems of the XXI century'; 11. Mezhdunarodnaya nauchnaya konferentsiya 'Sakharovskie chteniya 2011 goda: ehkologicheskie problemy XXI veka'; Minsk (Belarus); 19-20 May 2011; 6 refs., 3 figs.