We investigated signatures of small unmanned aerial vehicles (UAV) with different sensor technologies ranging from acoustical antennas, passive and active optical imaging devices to small-size FMCW RADAR systems. These sensor technologies have different advantages and drawbacks and can be applied in a complementary sensor network to benefit from their different strengths.
Alexander Hommes, Alex Shoykhetbrod, Denis Noetel, Stephan Stanko, Martin Laurenzis, Sebastien Hengy, and Frank Christnacher, "Detection of acoustic, electro-optical and RADAR signatures of small unmanned aerial vehicles," Proc. SPIE 9997, Target and Background Signatures II, 999701 (Presented at SPIE Security + Defence: September 26, 2016; Published: 24 October 2016); https://doi.org/10.1117/12.2242180.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon