摘要
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。
Aim at the lower height transmission environment by using the ultra wide band wireless signal in the communication link of micro air vehicle,analyse the probable existing landform and area in the propagation channel,and its impact on the pathloss of UWB signal. Select the modified S-V multipath channel model, simulate two choosed propagation environments, give the results including pathloss, impulse response, rms delay spread, mean excess delay,number of multipath components and power delay profile. The results indicate that this model can reflect the channel characteristic parameters efficiently,it can be used as reference of the design of UWB receiver.
出处
《无线通信技术》
2006年第4期49-53,共5页
Wireless Communication Technology
