XTRAN: An Atmospheric Transmittance Code Based on XSCALE

reportActive / Technical Report | Accession Number: ADA237624 | Open PDF

Abstract:

Several Electro-Optical Systems Atmospheric Effects Library modules require the use of XSCALE for calculation of the natural atmospheric transmittance value. XSCALE is a large over 1600 lines of code algorithm, which, in some cases, requires other external modules or data files for execution. XTRAN, a comparatively smaller less than 240 lines computer code, was developed for use with the KWIK crosswind integrated concentration munition expenditure stand-alone versions SKWIK and IKWIK. XTRAN computes horizontal extinction and transmittance values based on the XSCALE module for visible, near-, mid-, and far-infrared wavelengths by using estimated values of visibility and polynomial regression equations for aerosol extinction as a function of relative humidity. This report shows the usefulness and practicality of the XTRAN code as a horizontal transmittance model.

Author(s):
Pena, Ricardo
Author Organization(s):
ARMY LAB COMMAND WHITE SANDS MISSILE RANGE NM ATMOSPHERIC SCIENCES LAB
Descriptive Note:
Final rept.,
Pagination:
0037

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ASL-TR-0294
Monitor Series:
LABCOM
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5.2_Understand; JCA_5.3_Planning; JCA_6_Net Centric; JCA_6.4.1_Secure Information Exchange; JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_6.1_Information Transport; JCA_6.4_Information Assurance
Modernization Areas:
Microelectronics
Communities of Interest:
Advanced Electronics
Descriptor(s):
*COMPUTER PROGRAMS, FILES(RECORDS), ALGORITHMS, FREQUENCY, EXTINCTION, AEROSOLS, MODELS, MODULAR CONSTRUCTION, ESTIMATES, REGRESSION ANALYSIS, TRANSMITTANCE, CODING, FAR INFRARED RADIATION, POLYNOMIALS, VISIBILITY, EXTERNAL STORES, HORIZONTAL ORIENTATION, VALUE, ATMOSPHERES, HUMIDITY, DATA BASES
Field(s)/Group(s):
Atmospheric Physics
Keyword(s):
*ATMOSPHERIC PHYSICS, *TRANSMITTANCE, XSCALE COMPUTER PROGRAM, XTRAN COMPUTER PROGRAM, INFRARED SPECTRA, VISIBILITY, RELATIVE HUMIDITY, EXTINCTION COEFFICIENTS, CONTRAST THRESHOLD, AEROSOL, PE62784A
Report Date:
1991 Apr 01