Project

Multidimensional signal processing for digital antenna arrays.

Goal: Investigate, who has priority in suggestions of special matrix operations for multi dimensional tensor processing in digital antenna arrays

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Project log

Vadym Slyusar
added 4 research items
Предложен способ измерения характеристик направленности приемных каналов цифровой антенной решетки в случае их неидентичности.
Предложен метод коррекции амплитудно-частотных характеристик передающих каналов цифровой антенной решетки в случае их неидентичности.
Предложен метод коррекции квадратурных неидентичностей приемных каналов цифровой антенной решетки, отличающийся минимумом вычислительных затрат.
Vadym Slyusar
added a research item
This presentation proposes a technique for forming the response of two-channel demodulators. At the same time, a string vector is used, the elements of which are the weighting coefficients of the demodulator, which are used to form the quadrature components, as well as a wedge-shaped matrix with an inversely symmetrical sequence of elements. The amplitude-frequency characteristics (frequency response) of new synthesized I/Q-demodulators were studied. The possibility of significant suppression of the frequency response side lobes was confirmed, which confirms the noise immunity.
Vadym Slyusar
added a research item
This article is dedicated on 100 years since the birth of V. A. Varyukhin, the founder of the theory of multichannel analysis, and creator of the scientific school on digital antenna arrays.
Vadym Slyusar
added a research item
The рарег presents an analysls of the angular accuracy of the linear dlgital antenna аггау with defects of receptlon channels with known characteristlcs dlrectlvlty.
Vadym Slyusar
added a research item
A technique is suggested for determining the linear dynamic band and non-identity of receiving channels characteristics of a digital antenna array in the stand tests. A specific feature of the technique is the correction application of channel amplitude-phase properties. The experimental data confirm the efficiency of the approach. The technique can be taken as basis for the standard in testing and certification.
Vadym Slyusar
added a research item
The paper has considered the methods of raising the accuracy of ranging proportional to the radiopulse frequency filling and length based on the formation in the receiver of a multi-frequency signal and its matched processing in the mode of the "sliding" window.
Vadym Slyusar
added a research item
The article described the possible ways to increase the capacity of mobilе соmmиniсаtiоn systems, built with the use technology of digital beamforming in аntеnnа arrays. It is offered to carry оn corrective асtion of voltages of channels the digital аntеnnа array оn set of sources of pilot signals that allows to boost transmission capacity of а system consecrate in 2-З times.
Vadym Slyusar
added 2 research items
Under consideration of multi coordinate digital antenna arrays (DAA) there is the problem of compact matrix record of the reception channels. The known mathematical apparatus does not allow to use habitually for the perception structures of matrixes, describing directivity characteristics of the antenna elements and amplitude-frequency characteristics of the filters. For the solution of the given problem, it is offered to operate with a special type of the product of matrixes, named by the author as "face-splitting".
Vadym Slyusar
added a research item
Введены понятия торцевоrо и транспонированного торцевого npoизведений матриц и их модификаций.
Vadym Slyusar
added a research item
Робота відображає досягнення українських вчених і спеціалістів у створенні бортових антенно фідерних пристроїв та антенних решіток для космічних апаратів та наземних систем. https://youtu.be/IScVVyjkDnY
Vadym Slyusar
added a research item
This lecture presents the basic concepts of a lot of matrix operations and related applications for digital beamforming, which was proposed by author in 1996-1998. This lecture can be used for radar system, smart antennas for wireless communications, and other systems applying digital beamforming. It's intended for individuals new to the field who wish to gain a basic understanding in this area. For additional information, check out the reference material presented at the end of this lecture.
Vadym Slyusar
added 11 research items
Developed mathematical models of response multiposition digital antenna arrays signals arriving at the receiving subsystem of mobile communication and radar systems. Model formalized in case of use of digital linear and planar antenna arrays, as well as the method of MIMO, providing simultaneous emission transmitters digital active antenna array single frequency signals at different wavelengths of electromagnetic waves
В монографии изложены в прикладных аспектах современные методологические основы и методический аппарат синтеза средств информационного обеспечения вооружения и военной техники. Описаны варианты использования N-OFDM сигналов для решения задач связи на основе ЦАР, а также теория многокоординатных измерений в РЛС с цифровыми антенными решётками. Материалы монографии могут быть полезны для студентов, аспирантов и докторантов высших технических учебных заведений, а также для научных сотрудников научно-исследовательских и научно-производственных организаций.
Vadym Slyusar
added a project goal
Investigate, who has priority in suggestions of special matrix operations for multi dimensional tensor processing in digital antenna arrays