Angle-of-arrival fluctuations for wave propagation through non-Kolmogorov turbulence

• Published in: Optics communications 2009-03, Vol.282 (5), p.705-708
• Main Authors: Du, Wenhe, Yu, Siyuan, Tan, Liying, Ma, Jing, Jiang, Yijun, Xie, Wanqing
• Format: Article
• Language: English
• Subjects: Angle-of-arrival fluctuations; Atmospheric optics; Convection, turbulence, diffusion. Boundary layer structure and dynamics; Earth, ocean, space; Exact sciences and technology; External geophysics; Fundamental areas of phenomenology (including applications); Interaction of atmosphere with electromagnetic waves; propagation; Meteorology; Non-kolmogorov turbulence; Optics; Physics; Wave optics; Wave propagation, transmission and absorption
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2008.11.006

Recently the increasing experimental evidences have shown that atmospheric turbulence statistics does not obey Kolmogorov’s power spectrum model in portions of the troposphere and stratosphere. These experiments have prompted the investigations of optical wave propagation through atmospheric turbulence described by non-classical power spectra. In this paper, using an original approach and considering a non-Kolmogorov power spectrum which uses a generalized power law instead of constant standard power law value 11/3 and a generalized amplitude factor instead of constant value 0.033, the variances of the angle-of-arrival fluctuations of the plane and spherical waves are derived in weak turbulence for a horizontal path. The concise closed-form expressions are obtained and used to analyze the influence of spectral power law variation on the angle-of-arrival fluctuations.