ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,468,309, issued on Nov. 11, was assigned to TONGJI UNIVERSITY (Shanghai).

"Method and system for hovering control of unmanned aerial vehicle in tunnel" was invented by Bin He (Shanghai), Gang Li (Shanghai), Runjie Shen (Shanghai), Jie Chen (Shanghai), Zhipeng Wang (Shanghai), Ping Lu (Shanghai) and Yimin Lou (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "The embodiment of this present disclosure provides a control method of unmanned aerial vehicle (UAV) hovering in tunnel, which comprises the following steps: acquiring hovering information of hovering position of UAV; acquiring the position information of the current position of the UAV; deter...