临近空间Ka波段低速飞行器通信信道建模

摘要

In recent years near space communication platform has become the research focus. This paper constructs the near space low speed aircraft in Ka band channel model. In Ka band channel transmission, two kinds of attenuation are the main influence factors, one kind is multipath fading, one kind is rain attenuation, through the statistical analysis of the-ory, statistical model is established for this two kinds of attenuation respectively, the fading uses Rice distribution statisti-cal modeling, and uses transmission signal statistics multiplicative interference model to represent rain failure. Through MATLAB imitation result analysis, it proves the correctness and rationality of the model, so that it provides a new and more complete theory reference model for near space technology.%近年来临近空间通信平台已经成为研究的热点。针对临近空间低速飞行器构建了一种在Ka波段的信道模型。在Ka波段信道传输中，两类衰减是主要的影响因素，一类是多径衰减，一类是降雨衰减，通过统计分析的理论分别为这两类衰减建立了统计模型，多径衰落采用莱斯分布的统计建模，而采用传输信号的统计乘性干扰模型表征雨衰。通过MATLAB仿结果分析，证明建模的正确性和合理性，从而为临近空间技术提供了一种新的较为完备的理论参考模型。