Modeling and simulation tools for high-energy laser safety applications

Smith, Peter A.; Veldhuizen, David A. Van; Keppler, Kenneth S.

doi:10.1117/12.440053

Cited by 4 publications

(2 citation statements)

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“…However, as HELs move out of test ranges and into operational modes, the number of effective control measures diminishes, and deterministic hazard zones may be overly conservative 38 . In the extreme, on the battlefield it will be necessary to deconflict the risk from the laser energy with other resources in the battle space, and commanders will need to make informed decisions about the potential for fratricide and collateral damage, including laser injuries.…”

Section: Discussionmentioning

confidence: 99%

A Preliminary Study of the Application of Probabilistic Risk Assessment Techniques to High-Energy Laser Safety

Smith¹,

Keppler²,

Veldhulzen³

2001

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Section: Discussionmentioning

confidence: 99%

A Preliminary Study of the Application of Probabilistic Risk Assessment Techniques to High-Energy Laser Safety

Smith¹,

Keppler²,

Veldhulzen³

2001

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“…Under coherent laser illumination, provided that the illuminated area is much larger than the scale of spatial inhomogeneities of the medium or surface, the BRDF represents the radiant or angular intensity envelope under which the speckle pattern occurs. The BRDF is of fundamental importance in diverse applications including data simulation and analysis in both laser radar [1][2][3] and passive photometry [4][5][6] of solid targets, laser industrial process control, 7 high-energy laser (HEL) control, 8 stray-light analysis, 9 illumination design, 10 and computer vision, 11,12 animation, 13 and virtual reality. [14][15][16][17] Theoretical models describe the dependence of the BRDF on the physical properties of the reflector, which for surfaces may include the surface height distribution, height autocorrelation, slope distribution, and optical constants.…”

Section: Introductionmentioning

confidence: 99%

Coherence solution for bidirectional reflectance distributions of surfaces with wavelength-scale statistics

Hoover

Gamiz

2006

J. Opt. Soc. Am. A

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The scalar bidirectional reflectance distribution function (BRDF) due to a perfectly conducting surface with roughness and autocorrelation width comparable with the illumination wavelength is derived from coherence theory on the assumption of a random reflective phase screen and an expansion valid for large effective roughness. A general quadratic expansion of the two-dimensional isotropic surface autocorrelation function near the origin yields representative Cauchy and Gaussian BRDF solutions and an intermediate general solution as the sum of an incoherent component and a nonspecular coherent component proportional to an integral of the plasma dispersion function in the complex plane. Plots illustrate agreement of the derived general solution with original bistatic BRDF data due to a machined aluminum surface, and comparisons are drawn with previously published data in the examination of variations with incident angle, roughness, illumination wavelength, and autocorrelation coefficients in the bistatic and monostatic geometries. The general quadratic autocorrelation expansion provides a BRDF solution that smoothly interpolates between the well-known results of the linear and parabolic approximations.

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