Quasi-Random Frequency Sampling for Optical Turbulence Simulations
Abstract
Optical turbulence modelling and simulation are crucial for developing astronomical ground-based instruments, laser communication, laser metrology, or any application where light propagates through a turbulent medium. In the context of spectrum-based optical turbulence Monte-Carlo simulations, we present an alternative approach to the methods based on the Fast Fourier Transform (FFT) using a quasi-random frequency sampling heuristic. This approach provides complete control over the spectral information expressed in the simulated measurable, without the drawbacks encountered with FFT-based methods such as high-frequency aliasing, low-frequency under-sampling, and static sampling statistics. The method's heuristics, implementation, and an application example from the study of differential piston fluctuations are discussed.
- Publication:
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arXiv e-prints
- Pub Date:
- April 2024
- DOI:
- 10.48550/arXiv.2404.02978
- arXiv:
- arXiv:2404.02978
- Bibcode:
- 2024arXiv240402978B
- Keywords:
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- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- 13 pages, 6 figures, to be published in Optics Continuum