Abstract
To ensure the reliability of the physical level of Flying Ad Hoc Networks (FANET), the article substantiates the relevance of the study of stability and dynamic processes of signal formation and processing paths in the terminal and intermediate network equipment. The limitations of the known methods of the theory of automatic control, which make it difficult to perform the analysis of essentially nonlinear high-order signal generators, are shown. To analyze the stability of such formations proposed algorithm based on the use of the Nyquist criterion and approximation of the characteristic polynomial of a device by continuous piecewise functions; to analyze the dynamic characteristics of the algorithm based on spectral method of the input signal approximation and the frequency characteristics of a device by continuous piecewise functions.
Highlights
Organization of information exchange in Flying Ad Hoc Networks (FANET) requires creation of effective interaction between individual unmanned aerial vehicles (UAVs) (UAVUAV channel), as well as UAV and ground control centers (UAV-ground station channel) [1]
The process of information transmission in FANET networks is regulated by protocols of different levels, and the main differences from the classical protocols of hierarchical networks are typical for the four lower levels: physical [2,3,4], channel [4,5], network and transport [6,7]
The negative impact of external destabilizing factors can cause [11]: - reduction of signal-to-noise ratio due to attenuation of useful signal or increase of noise level; - problems with synchronization of transmitting and receiving nodes due to jitter growth; - the phenomenon of intersymbol interference due to the limited bandwidth of the communication channel and signal processing paths; - self-excitation of the paths of the transmitting and receiving module of the network. The study of these effects requires modeling and analysis of the stability of signal generation and processing paths, as well as dynamic characteristics of these paths. The solution of these problems can be performed on the basis of known approaches of the theory of automatic control: algebraic and frequency stability criteria [12,13,14,15,16,17], methods of solving ordinary differential equations [18,19,20,21]
Summary
Organization of information exchange in Flying Ad Hoc Networks (FANET) requires creation of effective interaction between individual unmanned aerial vehicles (UAVs) (UAVUAV channel), as well as UAV and ground control centers (UAV-ground station channel) [1]. The negative impact of external destabilizing factors can cause [11]: - reduction of signal-to-noise ratio due to attenuation of useful signal or increase of noise level; - problems with synchronization of transmitting and receiving nodes due to jitter growth; - the phenomenon of intersymbol interference due to the limited bandwidth of the communication channel and signal processing paths; - self-excitation of the paths of the transmitting and receiving module of the network The study of these effects requires modeling and analysis of the stability of signal generation and processing paths, as well as dynamic characteristics (transients) of these paths. The aim of the work is to develop algorithms for analyzing the stability and dynamic characteristics of nonlinear high-order signal generators at the physical level in FANET networks
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