%0 Journal Article %T Research on wingtip distance measurement of high-speed coaxial helicopter based on 77 GHz FMCW millimeter-wave radar %A Zhang, Zhiyuan %A Qiu, Zurong %A Hu, Wenchuan %A Lu, Yaohuan %A Zheng, Wenjie %J Measurement Science and Technology %V 34 %N 8 %P 18 %@ 0957-0233 %D 2023-08-01 %I IOP Publishing %~ DeepDyve