The ability to map and estimate the activity of radiological source distributions in unknown
three-dimensional environments has applications in the prevention and response to …

Rapid and accurate reconnaissance in the event of radiological and nuclear (RN) incidents
or attacks is vital to launch an appropriate response. This need is made stronger by the …

A particle filter algorithm is presented to estimate the position, strength, and cardinality of an
unknown number of radioactive point sources in an obstacle-rich environment using count …

In this second part of a multipaper series, we present results from outdoor aerial
measurements of surrogate distributed gamma-ray sources. We detail the design …

This work presents the application of a novel evolutional algorithmic approach to determine
and reconstruct the specific 3-dimensional source location of gamma-ray emissions within …

The ability to formulate maps of minimum detectable activities (MDAs) that describe the
sensitivity of an ad hoc measurement that used one or more freely moving radiation detector …

This article presents a parallel log-domain particle filtering algorithm combined with gamma
spectrum unfolding to perform localization, identification, and evaluation of multiple point …

Improving the accuracy of radiation source localization is crucial in security and safety
scenarios. Conventional methods for detecting and identifying special nuclear materials …

We demonstrate a method for using arrays of point sources that emulate--when measured
from a standoff of at least several meters--distributed gamma-ray sources, and present …

Simulated measurements of traditional shipping container screening infrastructure based on
large-area polyvinyl-toluene (PVT) or sodium-iodide detectors (NaI) are used alongside an …