| Summary: | Approved for public release; distribution unlimited === The ability to measure and predict atmospheric turbulence
affecting laser beam propagation is a major concern when
considering military applications. Such a method using a
telescope, high resolution television camera, video tape
recorder, digital storage oscilloscope, and calculator system
has been devised, tested and utilized. A laser beam signal is
recorded on video tape for further processing. This signal is displayed, stored and digitized using a Tektronix 468 digital
storage oscilloscope. The digitized signal is sent to a
Hewlett-Packard 9825 computing system for Fourier transform
analysis and„determination of the refractive index structure
constant, C . Several trials were conducted using He-Ne
and Ga-As lasers. The results demonstrated good correlation
with theoretical predictions as well as previously analyzed data.
|
|---|
