Comparing a recursive digital filter with the moving-average and sequential probability-ratio detection methods for SNM portal monitors

Journal Article · Wed Mar 31 23:00:00 EST 1993 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/23.212330· OSTI ID:6759931

Fehlau, P E ^[1]

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1. Los Alamos National Lab., NM (United States)

The author compared a recursive digital filter proposed as a detection method for French special nuclear material monitors with the author's detection methods, which employ a moving-average scaler or a sequential probability-ratio test. Each of these nine test subjects repeatedly carried a test source through a walk-through portal monitor that had the same nuisance-alarm rate with each method. He found that the average detection probability for the test source is also the same for each method. However, the recursive digital filter may have on drawback: its exponentially decreasing response to past radiation intensity prolongs the impact of any interference from radiation sources of radiation-producing machinery. He also examined the influence of each test subject on the monitor's operation by measuring individual attenuation factors for background and source radiation, then ranked the subjects' attenuation factors against their individual probabilities for detecting the test source. The one inconsistent ranking was probably caused by that subject's unusually long stride when passing through the portal.

• OSTI ID: 6759931
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 40:2; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

055001* -- Nuclear Fuels-- Safeguards
Inspection
& Accountability-- Technical Aspects
440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
ACTINIDES
ALARM SYSTEMS
COMPARATIVE EVALUATIONS
DESIGN
DETECTION
DEVELOPED COUNTRIES
DIGITAL FILTERS
ELEMENTS
ENRICHED URANIUM
EUROPE
EVALUATION
FISSILE MATERIALS
FISSIONABLE MATERIALS
FRANCE
ISOTOPE ENRICHED MATERIALS
MANAGEMENT
MATERIALS
MEASURING INSTRUMENTS
METALS
MONITORS
NORTH AMERICA
NUCLEAR MATERIALS MANAGEMENT
PLUTONIUM
RADIATION DETECTION
RADIATION MONITORS
SAFEGUARDS
TRANSURANIUM ELEMENTS
URANIUM
USA