Design of an optical remote sensing system for measuring refractive turbulence in the Antarctic boundary layer

Details Design of an optical remote sensing system for measuring refractive turbulence in the Antarctic boundary layer Design of an optical remote sensing system for measuring refractive turbulence in the Antarctic boundary layer

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2828..221g&link_type=abstract

Proc. SPIE Vol. 2828, p. 221-231, Image Propagation through the Atmosphere, J. C. Dainty; Luc R. Bissonnette; Eds.

Computer Science

Sound

Scientific paper

We have investigated the feasibility of building an innovative optical remote sensing instrument to monitor the vertical profile of the refractive index structure characteristic C(subscript n)(superscript 2). There is currently no active optical remote sensing instrument which is capable of doing this. Calculations have been performed for a system designed specifically to resolve a site survey question at the South Pole, where recent balloon soundings suggest that excellent astronomical seeing conditions could be obtained by mounting telescopes above a thin layer of atmospheric refractive turbulence near the surface. The new sensor considered here is essentially an imaging lidar which measures range- dependent laser beam wander, from which the vertical profile of C(subscript n)(superscript 2) can be derived. Calculations based on atmospheric characteristics and preliminary design parameters have been carried out for a practical system based on commercially available components. Design parameters include the choice of operating wavelength, elevation angle, transmitter and receiver diameters, and image scale. The calculations indicate that it is feasible to develop an optical remote sensor for monitoring vertical profiles of C(subscript n)(superscript 2) at the South Pole.

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