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Estimation of Laser Dazzle Effects on Shooting Performance

Estimation of Laser Dazzle Effects on Shooting Performance The human eye is an indispensable sensor for the execution of many military tasks, and a degraded vision would undoubtedly affect operator task performance. Dazzling the eye with a visible light source is for that reason an obvious countermeasure when trying to affect human vision and possibly degrade human performance. The effects are most often translated into a decrease of the field-of-view of the eye, but the question remains how this translates into human task performance degradation and secondly how accurate this degradation can be predicted. This study will try to quantify the performance degradation of a shooting task in a land environment when being dazzled by a green portable laser system. A measurement campaign has been organized to answer this question; every participant of the test group, composed of 14 persons, was asked to fire 5 shots in the direction of a competition-type target straight ahead, with and without dazzle. The registered time and scoring of the specific tests have been statistically analyzed to determine the significant effects, and the outcome has been compared with a predicted dazzle impact. The results of the shooting test show that the used laser dazzle prediction models quite well the human performance degradation and, at the same time, that there is a need for a specific test protocol to find the correct compromise between environmental validity of a trial and the number of independent variables that can be controlled. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Human Factors and Mechanical Engineering for Defense and Safety Springer Journals

Estimation of Laser Dazzle Effects on Shooting Performance

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Publisher
Springer Journals
Copyright
Copyright © 2019 by Springer Nature Singapore Pte Ltd.
Subject
Engineering; Mechanical Engineering; Structural Materials; Textile Engineering; Security Science and Technology
ISSN
2509-8004
eISSN
2367-2544
DOI
10.1007/s41314-019-0028-2
Publisher site
See Article on Publisher Site

Abstract

The human eye is an indispensable sensor for the execution of many military tasks, and a degraded vision would undoubtedly affect operator task performance. Dazzling the eye with a visible light source is for that reason an obvious countermeasure when trying to affect human vision and possibly degrade human performance. The effects are most often translated into a decrease of the field-of-view of the eye, but the question remains how this translates into human task performance degradation and secondly how accurate this degradation can be predicted. This study will try to quantify the performance degradation of a shooting task in a land environment when being dazzled by a green portable laser system. A measurement campaign has been organized to answer this question; every participant of the test group, composed of 14 persons, was asked to fire 5 shots in the direction of a competition-type target straight ahead, with and without dazzle. The registered time and scoring of the specific tests have been statistically analyzed to determine the significant effects, and the outcome has been compared with a predicted dazzle impact. The results of the shooting test show that the used laser dazzle prediction models quite well the human performance degradation and, at the same time, that there is a need for a specific test protocol to find the correct compromise between environmental validity of a trial and the number of independent variables that can be controlled.

Journal

Human Factors and Mechanical Engineering for Defense and Safety – Springer Journals

Published: Aug 20, 2019

References

  • Comparison of red, green, and blue laser disability glare
    McLin, LN; Barnes, LE; Kuyk, TK; Smith, PA; Dykes, JR; Novar, BJ; Garcia, PV
  • Optical eye simulator for laser dazzle events
    Coelho, JMP; Freitas, J; Williamson, CA
  • Nominal ocular dazzle distance (NODD)
    Williamson, Craig A.; McLin, Leon N.
  • Wavelength and ambient luminance dependence of laser eye dazzle
    Williamson, CA; Mclin, LN; Rickman, JM; Manka, MA; Garcia, PV; Kinerk, WT; Smith, PA
  • Determination of a laser eye dazzle safety framework
    Williamson, Craig A.; McLin, Leon N.