EO/IR sensors are digital video cameras that collect environmental information in the visible and infrared light spectrum. This generally incorporates electromagnetic radiation with wavelengths between 400 nanometers and 1 millimeter. IR sensors can be tuned to look specifically at short-wavelength IR, mid-wavelength IR, long-wavelength IR or a combination of the above. When EO/IR sensors are placed on a rotating gimbal and paired with analysis software, these systems are capable of providing wide-area coverage by acquiring and processing real-time full panoramic images. Furthermore, some of these systems are capable of automatically detecting and tracking UAS targets when paired with the appropriate analysis software.

Reference: DHS Counter-UAS Technology Guide