Precision Positioning of Unmanned Aerial Vehicle at Automatic Landing

The task of precision positioning of UAV at its automatic landing is discussed in this paper. This task is very actual for periodical charging of UAV battery via wireless charging system. The 2D displacement of wireless charging system parts has to be no more than 10 mm. This problem is solved by the use of microwave phase radio engineering system of object positioning. The system consists of the reader which is placed on a board of UAV and several transponders which are placed at charging base station. The design and operation of positioning system is described in the paper. The system operation is based on homodyne frequency conversion widely promoted by the authors. This approach possesses the simplest system design and, from the other hand, the system has perfect metrological features. As the UAV board space is very tight the antennas of radio engineering positioning system are integrated with microstrip structures of wireless battery charging system. The mutual coupling of these microwave system elements is considered in the paper.