Accession Number:

ADA394300

Title:

Monte Carlo Simulation and Analysis of Round-Trip Turbulence Effects on Ladar for Unresolved Target Detection

Descriptive Note:

Corporate Author:

SCHAFER (W J) ASSOCIATES INC CHELMSFORDMA

Report Date:

1997-03-01

Pagination or Media Count:

15.0

Abstract:

The effects of round-trip atmospheric turbulence on ladar 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 are therefore termed unresolved. In this paper previous round-trip turbulence analyses and data are reviewed, and the current Monte Carlo simulation code is discussed. Simulation results to date are presented indicating that intensity fluctuations or scintillation is 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.

Subject Categories:

  • Statistics and Probability
  • Miscellaneous Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE