Proceedings PaperREALTRAN: Real-Time Implementation Of Atmospheric-Transmittance Codes
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REALTRAN is the generic name given to a series of computer codes developed at NRL for predicting atmospheric transmittance in real time. The REALTRAN algorithms, tailored to meet the requirements of specific applications, are derived both from appropriately modified variants of codes such as HITRAN and LOWTRAN and from recent results of NRL's own atmospheric-propagation field experiments. REALTRAN codes have been developed for both laser and broadband applications. These codes are presently implemented on a Hewlett-Packard model 9825A calculator which has been configured to scan inputs from external sensors. REALTRAN provides cost-effective capabilities for using locally monitored meteorological conditions to forecast the operational performance of specific electrooptical systems.