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一种基于系统采样时钟量化的无人机测距方法
杨林超,黄华园,张玲
0
(中国西南电子技术研究所,成都 610036)
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。
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
DOI:
基金项目:
UAV ranging based on system sampling clock quantization
YANG Linchao,HUANG Huayuan,ZHANG Ling
(Southwest China Institute of Electronic Technology,Chengdu 610036,China)
Abstract:
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 ranging 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 unidirectional 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.
Key words:  UAV TT&C system  ranging method  single carrier frequency domain equalization(SC-FDE)  clock quantization
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