卫星陆地移动信道的新模型

A New Model for Land Mobile Satellite Channels

本文提出了一个卫星陆地移动信道的随机模型，并导出了３个主要统计量（概率密度分布函数、电平交叉率、平均衰落时间）．从这一数学模型出发，通过用有限个正弦信号来近似非白高斯噪声过程的方法得到了对应的计算机模型．最后利用ＰＣ机对所提出的计算机模型进行了模拟并与数学模型推导的结果进行比较，计算结果表明这两个模型具有极好的对应性．

おn this paper, a new stochastic model for land mobile satellite channels is presented. Three main statistics(probability density function, levelcrossing rate, and average duration of fades) is derived. From the mathematical model, a computer simulation model is derived by replacing all coloured Gaussian noise processes by finite sums of weighted sinusoids with equally distributed phases. Finally, a computer simulation process was taken by using PC computer, and comparison between the statistics of the computer model and the mathematical model is made. The results show that both models have excellent coincidence with each other.