11 August 1998 Helicopter obstacle warning presentation in an HMS/D including 3D stereoscopy
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An obstacle warning system (OWS) based on a laser-scanning technology has been installed and flight tested on a BK117 Helicopter. An assessment was done in a low level flight test are Nap of the Earth and under real conditions in a normal landscape. The field of view (FOV) of the OWS is 32 degrees and the image has the following resolution: 200 lines and 96 samples. The image refreshing rate is 2 Hz. The OWS front end with sensories and processing is working satisfactory. The major field of investigation is now the Man Machine Interface (MMI). Laser transmitter wavelength is 1.54 micrometers for eye-safety. The obstacle-information must be presented with no additional workload to the pilot in real time. The OWS-data were used in a simulation laboratory and presented to a binocular Helmet Mounted Sight/Display (HMS/D) with different kinds of presentation formats: line of safety, a grid-model, a tunnel-vector-presentation, real 3D-presentation and black and white and colored information. A silicon graphics calculates the independent eye information by 2 by 30 Hz by 3 colors and presents the stereoscopic video to the FS5 helmet made by Virtual Research. It has two colored Cathode Ray Tubes with 480 by 640 pixels. The results with several test persons are discussed in the paper.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hans-Dieter Viktor Boehm, Hans-Dieter Viktor Boehm, Stefan Haisch, Stefan Haisch, H. Warnatz, H. Warnatz, M. Dupuis, M. Dupuis, } "Helicopter obstacle warning presentation in an HMS/D including 3D stereoscopy", Proc. SPIE 3362, Helmet- and Head-Mounted Displays III, (11 August 1998); doi: 10.1117/12.317453; https://doi.org/10.1117/12.317453


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