Creating a Cn2 profile as a function of altitude using scintillation measurements along a slant path

Larry C. Andrews; Ronald L. Phillips; David Wayne; Paul Sauer; Troy Leclerc; Robert Crabbs

doi:10.1117/12.913756

24 February 2012 Creating a C_n² profile as a function of altitude using scintillation measurements along a slant path

Larry C. Andrews, Ronald L. Phillips, David Wayne, Paul Sauer, Troy Leclerc, Robert Crabbs

Proceedings Volume 8238, High Energy/Average Power Lasers and Intense Beam Applications VI; Atmospheric and Oceanic Propagation of Electromagnetic Waves VI; 82380F (2012) https://doi.org/10.1117/12.913756
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Using a three-aperture scintillometer system (TASS) to measure irradiance fluctuations along a slant path, it is possible to create a C_n² profile model as a function of altitude up to (and possibly beyond) the maximum altitude of a laser beam along the propagation slant path. This technique was demonstrated recently in June 2011 on a beacon beam transmitted between Hollister Airport in California and Fremont Peak at a slant range of 17 km. Although the primary experiment was to test a hybrid optical RF communication system (FOENEX), the beacon signal at the transmitter was intercepted by the TASS from which weighted path-average values of C_n², inner scale l₀, and outer scale L₀ were determined. Path-average values were then entered into an algorithm that determines the parameters of the HAP C_n² profile model (a variation of the HV profile model). In this paper we report on these recent measurements and how this method of constructing the HAP model can be used over other propagation paths.

Citation Download Citation

Larry C. Andrews, Ronald L. Phillips, David Wayne, Paul Sauer, Troy Leclerc, and Robert Crabbs "Creating a C_n² profile as a function of altitude using scintillation measurements along a slant path", Proc. SPIE 8238, High Energy/Average Power Lasers and Intense Beam Applications VI; Atmospheric and Oceanic Propagation of Electromagnetic Waves VI, 82380F (24 February 2012); https://doi.org/10.1117/12.913756

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