Round-trip turbulence scintillation effects on laser radar: Monte Carlo simulation results for unresolved targets

Douglas G. Youmans; Venkata S. Rao Gudimetla

doi:10.1117/12.280998

6 August 1997 Round-trip turbulence scintillation effects on laser radar: Monte Carlo simulation results for unresolved targets

Douglas G. Youmans, Venkata S. Rao Gudimetla

Author Affiliations +

Proceedings Volume 3065, Laser Radar Technology and Applications II; (1997) https://doi.org/10.1117/12.280998
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

The effects of round-trip atmospheric turbulence on ladar for unresolved target detection are being investigated using a Monte Carlo code with many phase-screens to simulate atmospheric turbulence effects. These phase-screens are located along the outward path of the laser-mode and the inward path of the backscattered laser speckle pattern. The targets used are variable in size and smaller than the propagated laser-mode transverse dimension, and they are therefore termed 'unresolved'. In this paper previous round- trip turbulence analyses and data are reviewed, and the current Monte Carlo simulation code for unresolved targets is discussed. Simulation results to date are presented indicating that intensity fluctuations are best described by a new two-parameter K-distribution probability density function. This intensity distribution may then be used in deriving a ladar receiver-operating-characteristic for determining the target detection probability including round-trip turbulence.

Citation Download Citation

Douglas G. Youmans and Venkata S. Rao Gudimetla "Round-trip turbulence scintillation effects on laser radar: Monte Carlo simulation results for unresolved targets", Proc. SPIE 3065, Laser Radar Technology and Applications II, (6 August 1997); https://doi.org/10.1117/12.280998

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