An Experiment to Measure Slant Path Extinction in the Marine Boundary Layer.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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An experiment to measure atmospheric extinction, along a slant path in the marine boundary layer, was devised and partially constructed. The slant path is from a kytoon, flown from a ship in motion, to a gyro-stabilized platform mounted on shipboard. The light source on the kytoon is an omni-directional high pressure xenon flash lamp, with a quartz envelope, to provide radiation from the visible to the middle IR regions of the spectrum. Wavelengths of 0.4880 micrometers, 0.6328 micrometers, 1.06 micrometers, 1.25 micrometers, 1.60 micrometers, 2.20 micrometers, and 3.80 micrometers, are isolated by use of interference filters. The range, needed in the process of determining extinction is obtained by a ranging system composed of a GaAs pulsing laser with optics mounted on the gyro-platform on shipboard, a retro-reflecting system on the kytoon, a receiver coaxial with the transmitter on shipboard, and a HP-1743-A 100 MHz oscilloscope. The pulsed laser also triggers the flashlamp on the kytoon so that synchronous detection techniques can be utilized for extinction measurements at the receivers. Author
- Atmospheric Physics
- Radiofrequency Wave Propagation