Development of Unmanned Remote System to Find Radiation Sources Based on 4π Gamma Imaging


A prototype system based on a combination of 4π sensitive gamma imaging and Simultaneous Localization and Mapping (SLAM) was developed to rapidly find unknown radiation source(s). The system consisted of a spherical visible camera, a 3D Light Detection And Ranging (LiDAR), a CdTe pixel array detector for 4π gamma imaging, a portable battery, and a control laptop PC and these were mounted on an unmanned vehicle. In a search area of 16×16 m2 with 3 m height, the finding of a 137Cs point source with its activity of 0.67 MBq surrounding thin walls was successfully demonstrated using the prototype system.

Journal of Robotics and Mechatronics, 36 (1)
Yusuke Tamura
Yusuke Tamura
Associate Professor, PhD