Radiation source localization systems and methods

A system comprising:

• a directional radiation detector;
• a logic device configured to communicate with a communications module and the directional radiation detector coupled to a mobile platform, wherein the communications module is configured to establish a wireless communication link with a base station associated with the mobile platform, the directional radiation detector comprises a sensor assembly comprising first and second radiation detectors configured to provide directional radiation sensor data to determine a direction of a radiological source as the mobile platform is maneuvered within a survey area, and the logic device is configured to:
• receive the directional radiation sensor data as the mobile platform maneuvers within the survey area,
• receive orientation and/or position data corresponding to the directional radiation sensor data, and
• generate radiation source localization survey information corresponding to the survey area based, at least in part, on a combination of the orientation and/or position data and the directional radiation sensor data;
• a planar collimating panel, wherein the first and second radiation detectors comprise respective first and second scintillators and/or semiconductor detectors that are separated from each other by the planar collimating panel along a direction perpendicular to a sensor axis of the sensor assembly;
• and
• wherein the directional radiation sensor data is represented by a ratio of counts accumulated in the first and second radiation detectors.