An improved thermal blooming model for the laser performance code ANCHOR
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Authors
Collins, Joseph C.
Subjects
thermal blooming
atmospheric propagation
laser
scaling code
Strehl ratio
ANCHOR
COAMPS
NAVSLaM
LEEDR
atmospheric propagation
laser
scaling code
Strehl ratio
ANCHOR
COAMPS
NAVSLaM
LEEDR
Advisors
Cohn, Keith R.
Date of Issue
2016-06
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
Laser weapon systems, unlike conventional weapons, are heavily dependent upon the ever-changing atmospheric conditions in their employment theater. In order to understand the operational effectiveness of a laser weapon, the performance limits due to atmospheric conditions need to be understood. ANCHOR, a laser performance scaling code developed at the Naval Postgraduate School, is one such code used to model a laser's effectiveness for a variety of atmospheric conditions. This thesis focuses on the calibration of ANCHOR's thermal blooming model. In the absence of turbulence, thermal blooming is generally well understood and the thermal blooming Strehl ratio is well defined. When turbulence is coupled with thermal blooming, however, the thermal blooming Strehl ratio is exceedingly difficult to quantify using scaling codes. This thesis calibrates ANCHOR's thermal blooming model using the full wave propagation code TBWaveCalc by adjusting the coefficients of an analytical formula to best fit the TBWaveCalc results over a wide variety of initial conditions.
Type
Thesis
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Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.