Network detection of radiation sources using ROSD localization

Wu, Chase Q.; Berry, Mark L.; Grieme, Kayla M.; Sen, Satyabrata; Rao, Nageswara S. V.; Brooks, Richard; Temples, Christopher

doi:10.1109/nssmic.2015.7581999

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…Other researchers have addressed the problem of radiation source localization using different approaches. The geometric difference triangulation method is presented in (Wu et al, 2014) to estimate source location by solving a system of nonlinear equations for three measurement sensors. The Ratio of Square Distance (ROSD) method introduced in (Chin et al, 2010), presents a closedform solution that can solve the imaginary root problem when dealing with more than 3 sensors.…”

Section: Introductionmentioning

confidence: 99%

Particle Filter Based Range Search Approach for Localization of Radioactive Materials

Mahmoud

el-Hamid

2022

Front. Energy Res.

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Wireless Sensor Networks (WSNs) have recently become crucial in monitoring operations. The development of a Data Fusion Algorithm for radioactive source localization utilizing WSN based on the Particle Filter (PF) technique is presented. The localization of an unknown-intensity point radioactive source using sensor nodes measured intensities in Count per Minute (CPM) is considered. The surveillance area is covered by several sensors (radiation detectors) n. Instead of using four sensors, as described in previous research, two consecutive sensors are used in sequence (S1, S2), (S2, S3)……, (Sn-1, Sn) till reaching the last sensor available Sn. Apollonius circle calculated range guides a particle filter for estimating the source location using actual measurements. Compared with other approaches such as the Iterative Pruning Clustering algorithm, more accurate estimates in terms of the error between the estimated source position and ground truth are obtained. The comparison is conducted using the same real measurements data. The Particle Filter based algorithm is implemented in a Xilinx FPGA chip. The architecture is a two sequential steps implementation, where particle generation, weight calculation, and normalization are carried out in parallel during the first step, followed by a sequential or parallelized resampling in the second step. This architecture targets a balance between hardware resources and speed of operation. The future work plan includes security-related studies and complete WSN implementation using μC/FPGA devices.

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Section: Introductionmentioning

confidence: 99%

Particle Filter Based Range Search Approach for Localization of Radioactive Materials

Mahmoud

el-Hamid

2022

Front. Energy Res.

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“…This concept has been around for over a decade [194,195,196]; however, the realisation of the advantages of this technique along with the advances in network and communication fields will lead to new developments in this area. Examples of network systems and algorithms in this field are the RAdTrac network system for gamma detectors, the particle filter algorithm for a network of gamma counters and the ROSD-RSD (Ratio of Squared Distance-Radiation Source Distance) algorithm method [197,198,199,200]. Other systems like identiFINDER S900 [201] and SmartShieldTM v2.0 [202] are commercially available for radionuclides identification and tracking.…”

Section: Passive Detection Systems Of Illicit Radioactive Materialsmentioning

confidence: 99%

Passive Gamma-Ray and Neutron Imaging Systems for National Security and Nuclear Non-Proliferation in Controlled and Uncontrolled Detection Areas: Review of Past and Current Status

Hamrashdi

Monk

Cheneler

2019

Sensors

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Global concern for the illicit transportation and trafficking of nuclear materials and other radioactive sources is on the rise, with efficient and rapid security and non-proliferation technologies in more demand than ever. Many factors contribute to this issue, including the increasing number of terrorist cells, gaps in security networks, politically unstable states across the globe and the black-market trading of radioactive sources to unknown parties. The use of passive gamma-ray and neutron detection and imaging technologies in security-sensitive areas and ports has had more impact than most other techniques in detecting and deterring illicit transportation and trafficking of illegal radioactive materials. This work reviews and critically evaluates these techniques as currently utilised within national security and non-proliferation applications and proposes likely avenues of development.

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“…The detection has to overcome a variety of uncontrollable factors, such as the presence of benign sources, time and space varying background noise, and obstacles that may occlude signal from sources. Several researchers have addressed the problem of radiation source localization using approaches that vary from geometric difference triangulation [1] to Bayesian algorithms that calculate the posteriori probability distribution based on prior estimates [2]. The Ratio of Square Distance (ROSD) method introduced in [3], presents a closed form solution which can solve the imaginary root problem, when dealing with more than 3 sensors.…”

Section: Introductionmentioning

confidence: 99%

Localization of radioactive source using a network of small form factor CZT sensors

Fragkos¹,

Karafasoulis²,

Kyriakis³

et al. 2020

J. Inst.

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A: We present a small factor (0.5 cm 3 ) CZT static sensor network consisted of a number of Non-Directional Detectors (NDD) capable to localize bare and lightly shielded radiation sources. The localization is performed with a fusion algorithm based on a fast analytical technique. The algorithm has been tested using simulated data and verified with experimental data from a static 137 Cs source of 7 MBq. The localization accuracy of the order of 15 cm has been archived in 3D for bare sources and of the order of 20 cm in 2D for light shielded sources within a monitored volume of 5 m × 2.8 m × 2 m. K: Radiation monitoring; Search for radioactive and fissile materials 1Corresponding author.

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Network detection of radiation sources using ROSD localization

Cited by 6 publications

References 2 publications

Particle Filter Based Range Search Approach for Localization of Radioactive Materials

Particle Filter Based Range Search Approach for Localization of Radioactive Materials

Passive Gamma-Ray and Neutron Imaging Systems for National Security and Nuclear Non-Proliferation in Controlled and Uncontrolled Detection Areas: Review of Past and Current Status

Localization of radioactive source using a network of small form factor CZT sensors

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