Sensor Technologies, Effects, and Applied Modeling



Radiation Detectors can sense and combat illegally trafficked materials and weapons of potential mass destruction.

However, there are many types of radiation detectors. Each one offers various benefits and drawbacks, depending on the nature of the situation. This presents a challenge when selecting what technology to use in a given circumstance.

Even when the right detector is deployed, the signal of the target material can still be blocked and prevent identification of the item. It is also impossible to install radiation detectors along every street or transport corridor. Such obstacles call for the creation of an optimal layout of radiation detectors that provide the greatest possible chance of material discovery.


ARA tackled the challenge by applying advanced computer-modeling codes to test the different types of radiation detectors against varying parameters. Some of these parameters include location, size, and orientation of the detector, type of material it expects to detect, and environmental factors that may influence detection.

Computers models consider these parameters to predict the signature of the nuclear material. This information allows the user to determine the best detector type, layout, or number to deploy in an anticipated scenario to ensure effective use of a limited technology. Computer models also help software developers create more reliable nuclear material identification algorithms.


This project has resulted in the accurate performances of radiation detector models in several scenarios. Our research has helped radiation detector users make logical application decisions quickly and correctly, potentially saving countless lives and making the world a safer place to live.

Modeling and Simulation

Modeling and Simulation

Tools for decision support and training for defense applications, the transportation community, medical and life sciences, and emergency... more


Sensors, Instrumentation, & Test Services

ARA has been designing and utilizing our own custom instrumentation since our founding over two decades ago. In that time, we’ve also build and... more