一种基于系统采样时钟量化的无人机测距方法  

UAV Ranging Based on System Sampling Clock Quantization

作　　者：杨林超 黄华园[1] 张玲[1] YANG Linchao;HUANG Huayuan;ZHANG Ling(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2018年第4期412-417,共6页Telecommunication Engineering

摘　　要：为了解决基于单载波频域均衡(SC-FDE)高速数据链无人机测控系统的地空双向距离测量问题,提出了一种基于系统采样时钟量化的无人机测距方法,将机载/地面测距信息分别量化至机/地系统采样时钟的计时器,完成地空双向距离的测量。理论分析和地空链路测试平台实验结果表明,新方法在复杂多径环境下实现了地空双向距离测量,降低了测距分系统的设计复杂度,地空双向实际测距均值与等效自由空间传输延迟一致,且测距精度满足理论测距误差设计值。该测距方法在无人机测控系统中具有良好的应用前景。To solve the problem of two-way ranging between unmanned aerial vehicle(UAV)and ground station(GS)based on single carrier frequency domain equalization(SC-FDE)high-speed data link,a ran-ging method based on system sampling clock quantization is proposed.The results of theroetical analysis and air-ground link platform experiment show that this method can measure range between UAV and GS in complex multi-path environment.It can also reduce the design complexity of the ranging system.The unidi-rectional range between UAV and GS is the same as the free space transfer delay.This ranging method has good prospects in UAV telemetry,tracking and command(TT&C)system.

关 键 词：无人机测控系统 测距方法 单载波频域均衡(SC-FDE) 时钟量化 

分 类 号：V556.3[航空宇航科学与技术—人机与环境工程] TN914.3[电子电信—通信与信息系统]