COMBINING MEASUREMENTS IN THE AIRBORNE DIRECTION FINDER AS PART OF THE UAV AUTONOMOUS NAVIGATION SYSTEM
DOI:
https://doi.org/10.26906/SUNZ.2024.4.011Keywords:
direction finder, statistical synthesis of algorithms, complexing of measurements, simulation modelingAbstract
The article is devoted to the development of a method of operation of an inexpensive, simple in realization, but at the same time highly accurate on-board direction finder that determines the angular position of radio emission sources for further autonomous navigation of UAVs. The aim of the article is to create a high-precision method of complexing measurements in the onboard direction finder located on autonomous guided UAVs, to provide practical recommendations for its algorithmic implementation and to carry out approbation of the main signal processing operations by simulation modeling methods. The objectives of the research include: 1) analysis of the statistical theory of optimization of signal processing algorithms in radio measurement systems; 2) development of algorithms for direction finding of radio sources capable of providing high accuracy in a wide range of observation angles; 3) synthesis of the structural scheme of the direction finder; 4) simulation modeling of the main algorithmic operations and evaluation of the accuracy of angular position measurement. Obtained result: theoretical developments of the method are confirmed, which due to the complexing of measurements from two-antenna amplitude direction finder with narrow diagrams, two-antenna direction finder with wide diagrams and two-antenna phase direction finder is able to overcome the contradiction between high accuracy and wide range of unambiguous measurements. Field of application: the obtained results are a theoretical basis for further experimental development of radio direction finders for various purposes, reveal the theoretical basis for the synthesis of methods of complexing measurements in radio systems for various purposes, and also contribute to improving the autonomy of flights of UAVs.Downloads
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