Vision-Based Autonomous Landing for the UAV: A Review

With the rapid development of the UAV, it is widely used in rescue and disaster relief, where autonomous landing is the key technology. Vision-based autonomous landing has the advantages of strong autonomy, low cost, and strong anti-interference ability. Moreover, vision navigation has higher guidance and positioning accuracy combined with other navigation methods, such as GPS/INS. This paper summarizes the research results in the field of vision-based autonomous landing for the UAV, and divides it into static, dynamic, and complex scenarios according to the type of landing destination. Among them, the static scenario includes two categories: cooperative targets and natural landmarks; the dynamic scenario is divided into two categories: vehicle-based autonomous landing and ship-based autonomous landing. The key technologies are summarized, compared, and analyzed and the future development trends are pointed out, which can provide a reference for the research on vision-based autonomous landing of UAVs.