When it comes to security, perimeter surveillance and site protection, many technologies exist including smart fences, CCTV and thermal cameras, lidar, fibre optic, radars and more. For wide area surveillance, the most common technology available is the radar. Using surveillance and security technologies to protect a site brings many benefits in terms of better situational awareness, lower cost and improved effectiveness of threat detection… But which should I choose according to my needs?
The most frequently asked question to thermal imager manufacturers is certainly: how far can the IR camera detect a target? It is indeed a good criterion to qualify one sensor from another considering the final application. The answer given to this question will probably include the “DRI ranges” expression, standing for Detection, Recognition and Identification.