摘要
建立了基于载波的微型无人机超宽带通信链路模型;给出了符合数据传播特性的高斯脉冲波形;在分析测控信道特征及微型无人机模型电磁场远场分布的基础上,给出了超宽带无人机航空信道模型,以及时延Rake接收系统误码率特性。实测数据的仿真结果表明该系统适合低速率微型无人机数据传输。
In this paper, an L-band Uhra-wideband （UWB） TTC link for the Micro Air Vehicles （MAVs） is proposed. The structure of UWB-MAV TTC link system and the muhipath channel model for wideband aeronautical communication are presented, considering the Direct Sequence Spread Spectrum （DSSS） modulation in the low-data single carrier-based impulse radio system. Taking into account the multipath and Doppler effects on the wideband DSSS signal, a lag Rake receiver capable of leveraging the diversity resulting from mobility is studied. The results show that a reliable UWB TTC link for MAVs can be established by compromising between range and performance of trarismission.
出处
《科技导报》
CAS
CSCD
2008年第21期34-37,共4页
Science & Technology Review
基金
高等学校博士学科点专项科研基金项目(20060699010)
关键词
微型无人机
超宽带
航空信道
测控链路
micro air vehicle ultra-wideband aeronautical channel
TTC link
