After a correlation process is subjected to the fluctuating transmission signals, the transmission fluctuation correlation spectrum is obtained to achieve the particle siz.
消光起伏相关频谱法(TFCS)是一种新的颗粒测量方法。
A series of measurments of the irradiance scintillation of a He Ne laser beam propagating over complex terrain were carried out.
对复杂地形情况下实际湍流大气中的激光强度起伏进行了系统的实验观测 ,分析了光强起伏统计特征的周日及全年变化规律。
We carried out a series of measurments of the irradiance scintillation of a He Ne laser beam propagating through a real turbulent atmosphere in a whole year.
对实际湍流大气中的激光强度起伏进行了系统的实验观测，详细分析了光强起伏的强度、概率密度分布与功率谱的统计特征及其周日、全年变化规律。
The influence of atmospheric turbulence on multiple-beam atmospheric laser communication and the characteristics of optical intensity fluctuation after the multiple beams passing through atmospheric turbulence are analyzed theoretically.
首先从理论上分析了大气湍流对多光束大气激光通信系统性能的影响和多光束大气传输的光强起伏特性 ,然后利用统计分析的方法 ,建立了一个以传输距离z、光束数目n、发射孔径之间的距离St、接收孔径Dr 等为参量的多光束大气传输信道模型。
The statistical characteristics of the laser log-intensity fluctuation and beam pattern in a turbulent atmosphere were studied systematically.
我们系统地研究了激光在湍流大气中的光强起伏与光斑统计特征。
The intermittency characteristics of laser irradiance scintillation in a turbulent atmosphere were checked qualitatively via the wavelet transformation, and a quantitative description method based on the singularity measure analysis was adopted to study the intermittency in a systematic manner.
以小波变换法观察了湍流大气中激光光强起伏的间歇特征，并用奇性测度进行了定量的描述。
From the relationship between the scaling exponent and the scintillation index we found that the characteristic of the power spectrum is different for the winter and the summer.
以５线段拟合法建立了确定湍流大气中激光对数光强起伏频谱的无标度区间的方法。