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Electro-optical muzzle flash detection

: Krieg, Jürgen; Eisele, Christian; Seiffer, Dirk


Huckridge, D.A. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Electro-Optical and Infrared Systems: Technology and Applications XIII : Edinburgh, United Kingdom, September 26, 2016
Bellingham, WA: SPIE, 2016 (Proceedings of SPIE 9987)
Paper 99870A, 7 pp.
Conference "Electro-Optical and Infrared Systems - Technology and Applications" <13, 2016, Edinburgh>
Conference Paper
Fraunhofer IOSB ()
muzzle flash; hostile fire indication; SWIR; InGaAs; uncooled IR cameras

Localizing a shooter in a complex scenario is a difficult task. Acoustic sensors can be used to detect blast waves. Radar technology permits detection of the projectile. A third method is to detect the muzzle flash using electro-optical devices. Detection of muzzle flash events is possible with focal plane arrays, line and single element detectors. In this paper, we will show that the detection of a muzzle flash works well in the shortwave infrared spectral range. Important for the acceptance of an operational warning system in daily use is a very low false alarm rate. Using data from a detector with a high sampling rate the temporal signature of a potential muzzle flash event can be analyzed and the false alarm rate can be reduced. Another important issue is the realization of an omnidirectional view required on an operational level. It will be shown that a combination of single element detectors and simple optics in an appropriate configuration is a capable solution.