V.N. Krasyuk – Dr. Sc. (Eng.), Professor, Leading Research Scientist, Department of Radio Technical and Optoelectronic Complex, Saint-Petersburg State University of Aerospace Instrumentation

E-mail: zlata@aanet.ru

A.R. Bestugin – Dr. Sc. (Eng.), Professor, Director of Institute of radio engineering, electronics and communication of Saint-Petersburg State University of Aerospace Instrumentation

E-mail: fresguap@mail.ru

M.B. Ryzhikov – Ph. D. (Eng.), Associate Professor of Department, Saint-Petersburg State University of Aerospace Instrumentation

E-mail: zlata@aanet.ru

I.A. Kirshina – Ph. D. (Econ.), Associate Professor, Saint-Petersburg State University of Aerospace Instrumentation E-mail: ikirshina@mail.ru

Autonomous navigation system is needed to fly light drones in the mountains. Doppler navigation system must have a light weight, low cost and dimensions. Navigation antenna of the microstrip antenna has been developed. The antenna consists of inclined segments to beams were oriented downward. Its small dimensions are determined using the Ku waveband and antenna design. The mathematical equations for calculating the beam parameters were obtained.

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