Features of developing a small-sized automatic landing radio system for an unmanned quadrocopter


Аuthors

Getmantsev A. Y.*, Chopanov T. M.

Branch of the "Take-off" of the Moscow Aviation Institute (National Research University), 416501, Astrakhan region, Akhtubinsk, Dobrolyubova str., 5

*e-mail: tomamens@mail.ru

Abstract

The article discusses the technical issues of creating a small-sized radio system for automatic landing of multicopter-type unmanned aerial vehicles (UAVs) on high-speed vehicles, such as ATVs. The article analyzes the new potential opportunities that arise from this method of landing while in motion and compares it with existing methods of landing. The article also discusses the disadvantages of drone docking stations. The article highlights the advantages of using a radio system for high-precision automatic landing of UAVs on a moving ATV, including when the ATV is tilted. It is substantiated that the developed landing radio system belongs to both the navigation system and the radio control system. To increase the range of the landing radio system, it is combined with satellite navigation systems for rough guidance to the high-precision landing zone. The analysis of additional requirements imposed on the multi-rotor UAV during emergency and special operations is carried out. Additionally, the requirements for protecting the UAV structure, propellers, and landing radio system from damage during the touchdown on the landing platform are described. The antenna systems of the transmitter and receiver of the considered radio system are selected and calculated. The application of an amplitude guidance method similar to the course-glide method is substantiated. The levels of signals from a cross-shaped radiation pattern are analyzed in detail. The carrier frequency of the transmitter is substantiated, and a complex modulation method for six radio channels is selected. The paper provides a justification for the complex radiation pattern of the transmitter antenna system, as well as calculations of the output power, carrier frequency, and modulating frequency of the radio channels that form it. The geometric dimensions of the antenna waveguide system are calculated, and the required number of antenna slots is determined. The paper presents a structural diagram of the radio channel for controlling the automatic landing of an UAV. Other features of the radio system transmitter are discussed in detail.

Keywords:

automated landing; radio control; complex antenna pattern

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