K.B. Amelin1

1 St. Petersburg State University of Aerospace Instrumentation (St. Petersburg, Russia)

The landing of manned and unmanned aerial vehicles (UAVs) is a complex technical task that requires the search for new solutions to improve the unification and efficiency of the radio equipment used.

At the same time, technical solutions should be applicable to the maximum extent for equipping both manned and unmanned aircraft of various classes and types.

One of these solutions is the use of the global navigation satellite system (GNSS) in relative positioning mode.

Evaluation of the potentially achievable characteristics of the relative positioning mode for landing requires a lot of theoretical and experimental work.

The purpose of this work is investigation of potentially achievable characteristics of accuracy, integrity and continuity of the GNSS relative mode for automatic landing of UAVs.

A structure for constructing the multifunctional system (MFS) is proposed, in which the technology of automatic dependent surveillance (ADS) systems is used to provide the relative GNSS mode for UAV landing.

The performed calculations and experiment made it possible to determine the potentially achievable characteristics in the presence of intra-system interference in the ground-to-air and air-to-ground communication channels and various compositions of GNSS constellations in ground and onboard equipment.

The characteristics of the integrity and continuity of navigation information have been evaluated.

The results of flight experiments with the use of the MFS for UAV landing are presented.

It is shown that the proposed structure of the MFS construction ensures the landing of UAVs with the characteristics corresponding to the requirements for automatic landing.

The results obtained confirm the prospects of introducing the proposed structure for constructing the MFS for navigation, landing and surveillance for UAVs in order to increase the efficiency of their use, including in solving problems of automatic landing at airfields and sea vessels.

Amelin K.B. Landing, navigation and surveillance radiotechnical system for unmanned aircraft. Achievements of modern radioelectronics. 2022. V. 76. № 12. P. 72–81. DOI: https://doi.org/ 10.18127/j20700784-202212-10 [in Russian]

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