中国物理B ›› 2007, Vol. 16 ›› Issue (5): 1327-1333.doi: 10.1088/1009-1963/16/5/027
马晶, 高宠, 谭立英
Ma Jing(马晶), Gao Chong(高宠)† , and Tan Li-Ying(谭立英)
摘要: Based on the modified spectrum, the analytic expressions for the variance and normalized covariance of angle-of-arrival (AOA) fluctuations are presented, which are applicable to the weak and strong regimes. The experimental data of AOA fluctuations validate the new derived expressions in weak and strong regimes. The results show that the receiving aperture D, outer scale and cell scale larger than the scattering disc S contribute significantly to the AOA fluctuations, and contributions from the small-scale turbulence are negligible. For the case of 4S/D\ll 1, the receiving aperture dominates low-pass filtering effects and the new displacement variances are in good agreement with the results from the old weak-fluctuation theory. For the case of 4S/D\gg 1, the scattering disc dominates the low-pass filtering effects and the new displacement variances depart from the results from the old weak-fluctuation theory.
中图分类号: (Atmospheric turbulence effects)