The rapid adoption of autonomous Unmanned Aerial Vehicles (UAVs) for various real-world applications in both industry and the military is driving the need for efficient UAV surveillance and countering systems, as these vehicles create new threats to the safety of people and assets. These systems typically contain a variety of sensors and effectors, including video sensors that are used for both human confirmation of a potential menacing UAV, and visual servicing of effectors used to counter an aerial threat. In this case, the performance of the system depends on the accuracy of the algorithm chain (classification, localization and threat identification) used for video tracking. In this paper, we study an original approach for temporally stable video tracking of targets. Specifically, we use state-of-the-art algorithms for semantic object detection and then consolidate them with a pose estimation method to enhance the perception performance. This paper compares different approaches on real data.
A multinational campaign was organized by the NATO SET56 Group to assess transmission and propagation in coastal
environments: the VAlidation Measurements of Propagation in IR and RAdar (VAMPIRA) experiment. VAMPIRA was
conducted in the Baltic, near Surendorf, Germany, from 27 March to 4 April 2004. During VAMPIRA, transmission
was measured in the IR and the visible using a diversity of techniques. Among these, transmission was deduced from
point-target tracking using blackbodies on board a boat. In this paper, VAMPIRA transmission measurements in the IR
are compared with model predictions. We use MODTRAN for the calculation of gaseous attenuation in conjunction with
aerosol extinction models currently available, namely: NAM (as in MODTRAN), WKDAERX (as in IRBLEM), ANAM3 and MEDEX. The various models are presented and put in their historical contexts. We found that under most stable situations encountered at VAMPIRA, the 3-mode models, NAM and WKD, provide better prediction than the 4-mode models ANAM3 and MEDEX.
A multinational campaign was organized by the NATO SET56 Group to assess transmission in coastal environments:
the VAlidation Measurements of Propagation in IR and RAdar (VAMPIRA) experiment. VAMPIRA was conducted in
the Baltic Sea, near Surendorf, Germany, from 27 March to 4 April 2004. During VAMPIRA, transmission was
measured in the IR and the visible using a diversity of techniques. Transmissometers were installed across Eckernfoerde
Bay, while aerosol measurements were made on the pier using Particle Measurement Systems (PMS), and
visibilitymeters were deployed onshore and on a boat. Furthermore, VAMPIRA included point-target tracking
experiments using blackbodies mounted on a boat. Some VAMPIRA measurements have already been presented at
various symposiums. The purpose of this paper is to compare VAMPIRA transmission measurements and make
comparisons with transmission estimates that can be deduced from the blackbody tracking sessions.
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