基于Hermite展开的太阳闪烁时间序列产生器

Solar Scintillation Time Series Generation Based on Hermite Expansion

研究太阳闪烁产生器设计优化问题,由于受太阳活动的影响,深空通信十分复杂。在无线通信中常受到太阳闪烁的影响,产生误码,造成通信效率降低。为了测试深空通信设备性能,一定要了解太阳闪烁时间序列的性能特点。针对实际观测得到的太阳闪烁时间序列极少的问题,在分析太阳闪烁特性的基础上,提出了一种用Hermite展开的太阳闪烁时间序列产生方法,并与基于FIR滤波器的闪烁时间序列产生方法进行了比较。仿真结果表明,提出的基于Hermite展开的太阳闪烁时间序列产生的性能,优于基于FIR滤波器的闪烁时间序列产生方法,并且无需预先知道时间序列的概率分布特性,更具有实用性,为太阳闪烁产生器设计提供了依据。

Research for the optimization problem of the solar scintillation time series generation＇s design.Due to the influence of the sun＇s activity,deep space communication is very complicated.In the wireless communication,due to the influence of the solar scintillation,it produces error and causes low efficiency.In order to test the performance of the deep space communication equipment,we must understand the characteristics of the solar scintillation time series.Because the solar scintillation time series of the actual observation is very little,based on the analysis of the characteristics of the solar scintillation,this paper researched a solar scintillation time series generation based on Hermite expansion,and compared with the solar scintillation time series generation based on FIR filter.The simulation results show that the performance of the solar scintillation time series generation based on Hermite expansion is better than the solar scintillation time series generation based on FIR filter,and this generation does not need to determine the probability distribution characteristics of the solar scintillation time series,so it is more practical.