星间链路信道模型研究

Research on the Inter-satellite Link Channel Model

低轨道卫星是卫星通信的发展趋势,但单星覆盖范围小决定了星间链路技术是将来发展的重点.由于星间链路信道不可避免的会产生衰减、时延、多普勒频移以及噪声等,一定程度上影响着通信质量.因此,在总结无线电波空间传输特性,分析星间链路信道统计特性的基础上,得出其统计模型,具有重要意义,并为进一步的计算机仿真提供依据.

Low earth orbit satellite is the developing trend of satellite communication. But due to its limited coverage, inter satellite link is the future emphasis in the feild of low earth orbit satellite. Affected by inevitable fade, delay, noise and Doppler frequency shift, communication quality is brought down in a certain degree. Therefore, it is important to put forward an inter-satellite link model based on statistic characteristics of electric wave transmiting in the space. This model will give a basis to further computer simulation.