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- W4387300030 abstract "The Turbulence and Aerosol Research Dynamic Interrogation System (TARDIS) is an optical sensing system that is based on dynamically changing the range between the collecting sensor and Rayleigh beacon during a static period of relatively unchanging turbulence-induced wavefront perturbations. In the past, obtaining measurement-based estimates of the turbulence strength profile from TARDIS was based around collating segmented refractive index structure parameter, <i>C<sub>n</sub><sup>2</sup></i> values traced to specific layers of the atmosphere. These values were developed from Fried parameter segments, which were deduced from differential tilt variance measurements from neighboring subapertures on the Shack-Hartmann wavefront sensor. In this work, we will exploit the crossings between the sensing paths from the different beacon locations (during a static period) to the wavefront sensor subapertures to derive turbulence profiles along the path. The differential tilt variance between a pair of subapertures due to a pair of beacons at two different ranges in a crossed sensing path configuration has a unique turbulence weighting function associated with it which depends on the geometry of the beacons and the subapertures. By using these unique path weighting functions along with the corresponding measured differential tilt variances for all configurations where the sensing paths cross, <i>C<sub>n</sub><sup>2</sup></i> profiles along the path can be constructed. The derivation of the weighting functions will be discussed and derived profiles will be compared to measurements from other profiling instruments such as MZA’s DELTA-Sky and to numerical weather prediction models." @default.
- W4387300030 created "2023-10-04" @default.
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- W4387300030 date "2023-10-03" @default.
- W4387300030 modified "2023-10-04" @default.
- W4387300030 title "A new approach to profiling atmospheric turbulence using a dynamically ranged Raleigh beacon system" @default.
- W4387300030 doi "https://doi.org/10.1117/12.2678076" @default.
- W4387300030 hasPublicationYear "2023" @default.
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