Transmittance Measurements at DIRT-III, a Preliminary Report
NAVAL RESEARCH LAB WASHINGTON DC
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This preliminary report describes the visible and infrared transmittances measured through dust clouds and rain at the Dusty Infrared Test- III DIRT-III, Fort Polk, Louisiana, April-May 1980. The measurement system was the Naval Research Laboratory NRL transmissometer operating at 0.55, 1.06, and 10.37 micrometers. Data were collected through dust clouds produced by various types of munitions and high explosives in the natural soil and tailored soils consisting of sand, silt, clay, and various mixtures. The onset of a rainstorm also provided the opportunity to measure transmittances for varying precipitation rates.
- Infrared Detection and Detectors