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Optical Matrix Device: Technical Aspects of a New Tool for the Detection and Recording of Small Nocturnal Aerial Targets
Journal of navigation
The detection of flying targets in the night sky has provided interest for bird migration research over many years with methods largely dependent on moon watching or the use of radar and infrared camera. These methods lack the versatility of the system described in this paper which detects and automatically records aerial targets in the night sky of a size greater than 5 cm and at a distance of 100 to 1000 metres from the observer. The principle design features are first, an optical device fordoi:10.1017/s0373463308005031 fatcat:jenorndebrdcth6wrumizfskha