湍流大气中光学外差接收机阵列的联合信号电流概率分布

Joint signal current probability distribution for optical heterodyne receiver arrays in the turbulent atmosphere.

作者信息

Churnside J H, McIntyre C M

出版信息

Appl Opt. 1979 Jul 1;18(13):2315-22. doi: 10.1364/AO.18.002315.

DOI:10.1364/AO.18.002315

PMID:20212652

Abstract

Optical heterodyne receiver arrays operating in the presence of atmospheric turbulence are considered. Approximate expressions are presented for the joint probability density functions of the intermediate frequency signal magnitude vectors from optical heterodyne receiver arrays operating in the presence of clear air turbulence. The analysis considers the effects of arbitrarily correlated amplitude fluctuations and arbitrarily correlated phase front perturbations in the presence of local oscillator shot noise. Both passive receiver arrays and those employing active tilt tracking systems to eliminate angle-of-arrival fluctuations are described. The special case of a two-detector, nontracking array is discussed in detail, both theoretically and experimentally.

摘要

考虑了在大气湍流环境下工作的光学外差接收机阵列。给出了在晴空湍流环境下工作的光学外差接收机阵列中频信号幅度矢量联合概率密度函数的近似表达式。该分析考虑了在存在本地振荡器散粒噪声的情况下，任意相关的幅度波动和任意相关的相位前沿扰动的影响。描述了无源接收机阵列以及采用有源倾斜跟踪系统来消除到达角波动的阵列。从理论和实验两方面详细讨论了双探测器非跟踪阵列的特殊情况。