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Information × Registration Number 0215U000665, 0113U000998 , R & D reports Title Investigation of novel adaptive digital antenna arrays for future dual-prorpose information-communication radiosystems popup.stage_title Head Dubrovka Fedir Fedorovich, Registration Date 16-03-2015 Organization Faculty of аircraft and space systems NTUU "KPI" popup.description2 Scientific report: 133 s, 172 Fig. 6 Table. 16 sources. Object of study - adaptive processes controlled reception of electromagnetic waves and digital signal processing array. The main aim - the development of principles of the design and engineering ways of implementing of smart antennas - advanced adaptive digital antenna arrays capable of automatically in real time to respond to the electromagnetic environment. The method of neural networks and partickle swarm multivariable optimization was implemented to find the topology of dual-frequency antenna array for receiving of navigation signals in the range of L1 and L2 GPS / GLONASS. Array consists of 10 microstrip radiating elements powered independently via coaxial probes. Array structure made by a two-layer printed circuit technology based on high dielectric substrate serial type TMM 6 (dielectric constant = 6) with a thickness of 3,125 mm and 6.25 mm. The top surface of the dielectric substrate foil with a thickness of 3,125 mm on corners squares with sides 120 and 94 mm are four radiating ring resonator for a range of L2 and four ring resonator for emitting band L1. A mathematical model of a digital antenna array with adaptive formation of zeros and maxima directional pattern by combining multiple software products such as: CST Microwave Studio, MatLab, Simulink software optimization with its own weight coefficients of the lattice. The efficiency of the method of conjugate gradients for active noise suppression algorithm in terms of its implementation on FPGA speed and the potential levels of noise suppression. The results are implemented in satellite navigation systems for various purposes, which are produced and delivered by enterprice "NAVIS-Ukraine" (m. Smela) commissioned Ukrainian and foreign companies. Array, navigation system, adaptive antennas. Terms of the report: the contract. 252 171, Kyiv-171, st. Gorky, 180, UkrISTEI. Product Description popup.authors Захарченко Оксана Степанівна Литвин Микола Миколайович Литвин Сергій Миколайович Мартинюк Сергій Євстафійович Овсяник Юрій Антонович Степаненко петро Якович Толкачов олексій Володимирович popup.nrat_date 2020-04-02 Close