Human Factors And Safety Considerations Of Night Vision Systems Flight

Verona, Robert W.; Rash, Clarence E.

doi:10.1117/12.960916

Cited by 18 publications

(17 citation statements)

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“…The values given in Table 1 are consistent with those typically reported in the literature, which give peak luminances of 0.9 and 2.2 footlamberts (fL) for second and third generation NVGs respectively (Verona and Rash, 1989). Experimental procedures.…”

Section: Nvg Gnerationssupporting

confidence: 79%

Visual Acuity with Second and Third Generation Night Vision Goggles Obtained from a New Method of Night Sky Simulation Across a Wide Range of Target Contrast

Kotulak¹,

Rash²

1992

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Section: Nvg Gnerationssupporting

confidence: 79%

Visual Acuity with Second and Third Generation Night Vision Goggles Obtained from a New Method of Night Sky Simulation Across a Wide Range of Target Contrast

Kotulak¹,

Rash²

1992

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“…From Verona and Rash (1989), the following issues were identified: 1) identification of roads; 2) lighting effects on NVG performance; 3) detection of powerlines; 4) influence of particulate matter on NVG performance; 5) lack of color information; 6) influence of dirty windows and/or lenses on NVG performance. From Scott (1992), the following training issues were identified: 1) effect of fog on NVG performance; 2) detection of powerlines.…”

Section: Training Analysis Resultsmentioning

confidence: 99%

United States Air Force Summer Research Program -- 1993. Volume 2. Armstrong Laboratory

Moore¹,

DelVecchio²,

Swope³

et al. 1993

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“…However, having two images improves perceived brightness and contrast and reduces visual noise (Verona & Rash, 1989).…”

Section: Nvg Characteristicsmentioning

confidence: 99%

“…The first part describes the background and components of NVGs and is based primarily on the literature of Brickner (1989), Price and McLean (1985), and Verona and Rash (1989). The second part describes the system components that generate the superimposed symbology and is based on information obtained from the U.S. Army Aviation Systems Command (AVSCOM), St. Louis, Missouri, and on Buckner (1992).…”

Section: Anvis-hud System Descriptionmentioning

confidence: 99%

“…Although the improved resolution of the ANVIS provides 20/40 acuity under ideal conditions, acuity usually decreases under field conditions. Tredici and Miller (1985) found that acuity under starlight conditions dropped to less than 20/80 with the ANVIS.Although the scene image is presented to both eyes, NVG depth perception is similar to monocular vision (Wiley, 1989).However, having two images improves perceived 4 brightness and contrast and reduces visual noise (Verona & Rash, 1989). …”

mentioning

confidence: 99%

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The Effects of Superimposing Symbology on a Simulated Night Vision Goggle Display

McAnulty¹,

Ruffner²,

Hamilton³

1993

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During low level, night vision goggle (NVG) helicopter flight, it is difficult and potentially unsafe for aviators to divert their attention from the external scene to obtain critical flight information from cockpit instruments. To address this problem, the U.S. Army is acquiring a system that superimposes flight symbology on the imagery seen through one of the NVG intensifier tubes. However, previous research indicates that superimposed symbology may distract the pilot's attention from obstacle detection, recognition, and avoidance, and may interfere with proper scanning patterns.This report describes the results of a research project designed to determine how well rotary wing aviators can monitor the simultaneous display of NVG imagery and symbology. The results showed a relatively small decrement in performance when the two types of information were presented together. Aviator performance with the system improved with practice and was related to pilot exper'ience and eye dominance. The aviators suggested several modifications for the symbology suite.The results of this research can be used to modify the proposed symbology suite and to develop operational procedures for fielding the equipment. The research also identifies additional NVG imagery and symbology issues that need to be investigated. EDGAR J JdHNS ONActing Director v ACKNOWLEDGMENTSThe authors express their appreciation to the following individuals who contributed to this project.From the U.S. Army Research Institute Aviation Research and Development Activity, Dennis K. Leedom provided overall guidance for the research, MAJ Dale Weiler Coordinated research subjects, and Larry Murdock conducted the statistical analyses. From Dynamics Research Corporation, Robert Simon and John Morey provided advice on the research design and reviewed a draft of the report.Five members of the Anacapa Sciences staff assisted in conducting the research. We thank Gary Coker for designing the computer architecture, writing the computer programs, and supporting the experimental sessions; Kenneth Persin for providing technical support; Annette Swan for scoring the scene data; Tina Pridgen for providing administrative, scoring, editing, and word processing support; and David Thill for serving as an experimenter.Finally, we thank CW2 Joseph Cogelia, who provided subject matter expertise in developing the scenarios and in identifying scoring criteria. Mr. Cogelia also served as an experimenter and compiled technical information for the project report.Although they are not mentioneu by name, we also thank the aviators who enthusiastically participated in this research. U.S. Army helicopter pilots routinely use night vision goggles (NVGs) to conduct low level flights at night. The most recent version of NVGs, the aviators night vision imaging system (ANVIS), allows the pilot to look under or around the goggles to read critical flight instruments. However, reading instruments that differ in illumination and optical distance from the external scene is difficult and potentially uns...

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Human Factors And Safety Considerations Of Night Vision Systems Flight

Cited by 18 publications

References 0 publications

Visual Acuity with Second and Third Generation Night Vision Goggles Obtained from a New Method of Night Sky Simulation Across a Wide Range of Target Contrast

Visual Acuity with Second and Third Generation Night Vision Goggles Obtained from a New Method of Night Sky Simulation Across a Wide Range of Target Contrast

United States Air Force Summer Research Program -- 1993. Volume 2. Armstrong Laboratory

The Effects of Superimposing Symbology on a Simulated Night Vision Goggle Display

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