Accession Number : ADA262857


Title :   SWAT System Performance Predictions


Descriptive Note : Project rept.


Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB


Personal Author(s) : Parenti, Ronald R ; Sasiela, Richard J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262857.pdf


Report Date : 10 Mar 1993


Pagination or Media Count : 103


Abstract : In the next phase of Lincoln Laboratory's SWAT (Short-Wavelength Adaptive Techniques) program, the performance of a 241-actuator adaptive-optics system will be measured using a variety of synthetic-beacon geometries. As an aid in this experimental investigation, a detailed set of theoretical predictions has also been assembled. The computational tools that have been applied in this study include a numerical approach in which Monte-Carlo ray- trace simulations of accumulated phase error are developed, and an analytical analysis of the expected system behavior. This report describes the basis of these two computational techniques and compares their estimates of overall system performance. Although their regions of applicability tend to be complementary rather than redundant, good agreement is usually obtained when both sets of results can be derived for the same engagement scenario.... Adaptive optics, Phase conjugation, Atmospheric turbulence Synthetic beacon, Laser guide star.


Descriptors :   *COMPUTER PROGRAMS , *COMPUTATIONS , *SHORT WAVELENGTHS , *ADAPTIVE OPTICS , SCENARIOS , PREDICTIONS , COMPARISON , TURBULENCE , BACKSCATTERING , MONTE CARLO METHOD , PHASE , BEACONS , LOW ALTITUDE , RAY TRACING , AGREEMENTS , BEHAVIOR , ACTUATORS , ERRORS , RAYLEIGH SCATTERING , ESTIMATES , ATMOSPHERICS , REGIONS , LASERS , ATMOSPHERIC MOTION , NUMERICAL ANALYSIS , TOOLS , SIMULATION , OPTICS


Subject Categories : Computer Programming and Software
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE