Sensor Technologies, Effects, and Applied Modeling



Radiation detectors are deployed in a variety of scenarios in order to detect and counter illicit trafficking of materials and potential weapons of mass destruction. There are many different types of radiation detectors, all of which offer various benefits and drawbacks, depending on the situation. The differing performance of various technologies presents a challenge when determining what technology to use in a given situation. Additionally, it is impossible to deploy radiation detectors along every street or transport corridor. This necessitates determining an optimal layout or radiation detectors to offer the greatest possible chance of interdicting any illicit trafficking of material. Often times the materials that one is trying to detect may have their signal masked in such a way that even if the right detector is deployed, it may not positively identify the material.


Using advanced computer modeling codes the various types of radiation detector technologies can be modeled against varying parameters. Some of these parameters may include location, size of the detector, type of material expected to detect, orientation of the detector, 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 several scenarios where the performance of a radiation detector has been accurately modeled. The user can then take this information and make better decisions more quickly as to what type of detector and how many to deploy to detect and interdict trafficked material.

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