Вплив структури акустичного поля бпла на умови приймання розсіяних радіосигналів у системах радіоакустичної локації

Abstract

The paper analyzes the structural and dynamic characteristics of UAV acoustic emission and their influence on the conditions of electromagnetic wave scattering in radioacoustic location systems. It is shown that the first three blade harmonics contribute up to 70% of the total acoustic power, determining the Bragg condition for resonant scattering. The non-stationary nature of the acoustic spectrum caused by flight controller operation and maneuvering is identified as a key factor affecting scattered signal reception. The necessity of adaptive frequency tuning of the probing signal to maintain resonant scattering conditions is substantiated