Modeling of the GLONASS navigation signal in the conditions of multipath propagation

Authors: Savelev E.V.
Published in issue: #2(43)/2020
DOI: 10.18698/2541-8009-2020-2-577
Category: Informatics, Computer Engineering and Control | Chapter: System Analysis, Control, and Information Processing, Statistics
Keywords: global satellite navigation systems, navigation equipment, radio signal distortion, multipath propagation, fast fading, pseudo-ranging method, bit error probability, simulation
Published: 11.02.2020

The article is devoted to the development of simulation models of the GLONASS satellite navigation system in the presence of signal fading caused by multipath propagation, which is one of the main reasons for the malfunction of such systems and, therefore, an urgent problem. A mathematical model of multipath propagation is described; changes in the amplitude and phase of the signal caused by it are shown. Particular attention is paid to the distribution of signal fading, causing the greatest distortion of navigation information. Simulation models are presented of the impact of fast fading, distributed according to the laws of Rice and Rayleigh on the navigation signal. The analysis of the effectiveness of systems in the presence and absence of a direct line of sight between the transmitter and receiver is carried out.

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