Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop...
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Transcript of Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop...
![Page 1: Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop September 20, 2012 Richard Vojtech, Ph.D. Principal Deputy.](https://reader034.fdocuments.in/reader034/viewer/2022051115/5697bfa21a28abf838c9646c/html5/thumbnails/1.jpg)
Domestic Nuclear Detection Office (DNDO)
Networking Radiation Sensor Systems
NITRD Workshop
September 20, 2012
Richard Vojtech, Ph.D.Principal Deputy Assistant DirectorTransformational and Applied Research Directorate Domestic Nuclear Detection Office
![Page 2: Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop September 20, 2012 Richard Vojtech, Ph.D. Principal Deputy.](https://reader034.fdocuments.in/reader034/viewer/2022051115/5697bfa21a28abf838c9646c/html5/thumbnails/2.jpg)
The Questions
1. Will a networked system of portable radiation detectors outperform the same number of individual detector operating independently?
2. Will the networked system improve the ability to:
detect anomalous radioactive materials?
locate the materials?
identify the materials?
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![Page 3: Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop September 20, 2012 Richard Vojtech, Ph.D. Principal Deputy.](https://reader034.fdocuments.in/reader034/viewer/2022051115/5697bfa21a28abf838c9646c/html5/thumbnails/3.jpg)
The Program Goal
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To demonstrate advanced technologies that improve the ability to detect, localize, and identify radiological sources by combining data from multiple radiation detector nodes.
Key Questions:
• How does the performance of the ensemble compare to that of the
individual detectors?
• What are the strengths and weaknesses of each system approach?
• Do trends in the data suggest which types of scenarios will
benefit the most from a tightly coupled network?
![Page 4: Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop September 20, 2012 Richard Vojtech, Ph.D. Principal Deputy.](https://reader034.fdocuments.in/reader034/viewer/2022051115/5697bfa21a28abf838c9646c/html5/thumbnails/4.jpg)
“Intelligent” Radiation Sensor System
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Advanced algorithms combine the radiation, spatial, and temporal information from multiple sensors to make a collective assessment about the presence and location of radiological sources
N2
N1
N3
N4
N5WirelessComms
Sensor Array
Data Fusion Algorithms
mt
mt+1
mt+2
Data Packet
~1 Hz
• Energy Spectrum • Sensor Position/Orientation• Timestamp
![Page 5: Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop September 20, 2012 Richard Vojtech, Ph.D. Principal Deputy.](https://reader034.fdocuments.in/reader034/viewer/2022051115/5697bfa21a28abf838c9646c/html5/thumbnails/5.jpg)
Detector Devices
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General Electric
Passport Systems
Smiths Detection
![Page 6: Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop September 20, 2012 Richard Vojtech, Ph.D. Principal Deputy.](https://reader034.fdocuments.in/reader034/viewer/2022051115/5697bfa21a28abf838c9646c/html5/thumbnails/6.jpg)
System Characterization
Subsetting
2 rings6 quadrilaterals
7 triangles
Subsets
2 rings6 quadrilaterals
7 triangles
Detector Pattern: Spiral + Rings
Movable Track
2”x2” NaI (18)
Alt DD (4)
command trailers
background step area
open “field” area
![Page 7: Domestic Nuclear Detection Office (DNDO) Networking Radiation Sensor Systems NITRD Workshop September 20, 2012 Richard Vojtech, Ph.D. Principal Deputy.](https://reader034.fdocuments.in/reader034/viewer/2022051115/5697bfa21a28abf838c9646c/html5/thumbnails/7.jpg)
Initial Impressions from a Networked System
In simple cases IRSS shows benefits of networking for detection and agrees well with theoretical expectations
Networking can provide reduction in false alarms at the system level compared to a collection of individual sensors
Tracking of moving sources (even with a single sensor) was achieved with non-directional sensors
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