论文部分内容阅读
针对将超宽带无线信号应用于超小型无人机通信链路的低空传输环境,分析了信号传播可能遇到的各种地形、地物等因素对传输损耗的影响,选择修正的S-V多径信道模型,对选定的两个信号传播环境进行了仿真,并给出了信道的路径损耗、冲激响应、rm s时延扩展、平均超量时延、多径分量数目和功率延迟剖面,仿真结果表明该模型能够有效反映信道的特性参数,可为超宽带接收机的设计提供参考。
Aiming at the low-altitude transmission environment in which UWB wireless signals are applied to the communication links of UAVs, the influence of various terrains, ground objects and other factors that may be encountered in the signal propagation on the transmission loss is analyzed. A modified SV multipath channel Model of the selected two signal propagation environment was simulated and gives the channel path loss, impulse response, rm s delay spread, average excess delay, multipath component number and power delay profile, simulation The results show that the model can effectively reflect the channel characteristic parameters, which can provide a reference for the design of UWB receiver.