Spatial filtering algorithms in adaptive multi-beam hybrid reflector antennas

Tyapkin, V. N.; Карцан, И Н; Дмитриев, Д. Е.; Goncharov, A E

doi:10.1109/sibcon.2015.7147244

Cited by 14 publications

(3 citation statements)

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“…Based on the analysis of needs in Earth remote sensing (ERS) data and the "Development Strategy of the State Corporation for Space Activities "Roscosmos" for the period up to 2025 and perspective up to 2030", by 2030 the spatial resolution indicators in the visible range of 0.2 m, in the radar range of 0.5 m, and in the infrared range of 30 m should be achieved, with a data update frequency of 8 times/day, which corresponds to 100% satisfaction of needs in ERS data [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Algorithm for assessing the promptness of Earth space sensing information delivery

Mavrin,

Golikov

2023

E3S Web of Conf.

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Remote sensing of the Earth is mainly carried out in the visible region of the spectrum, which corresponds to the current level of development of high-precision onboard instruments for Earth remote sensing. At the same time, methods and equipment for sensing in the radio- and infrared ranges of the electromagnetic spectrum are widely used and developed at a faster pace. The frequency of data acquisition ranges from once per month to once per minute, the spatial resolution ranges from kilometer to centimeter scales, and the electromagnetic spectrum covers wavebands ranging from visible light to microwave wavelengths. The efficiency of Earth remote sensing information delivery to consumers is considered under different variants of satellite-repeater network construction, taking into account the characteristics of existing and prospective high-speed radio lines of spacecrafts.

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Section: Introductionmentioning

confidence: 99%

Algorithm for assessing the promptness of Earth space sensing information delivery

Mavrin,

Golikov

2023

E3S Web of Conf.

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“…Reflectarray antennas can be designed to produce single or multiple beams using single or multiple feeds at different frequency bands [6][7][8][9][10][11][12][13]. Fang et al introduced a doublebeam reflectarray using a single feed horn based on the phase synthesis method, and achieved a gain of about 19.5 dB and a 1-dB gain-bandwidth of 16.5% for the frequency range from 5 to 7 GHz [8].…”

Section: Introductionmentioning

confidence: 99%

Single- and double-beam reflectarrays for Ka band communication

et al. 2019

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The Ka band has found applications in satellite, and radar communications. It is also expected that this band will be utilized for 5G applications. This paper presents single-and double-beam microstrip reflectarrays with single layer and compact size for Ka band communications at 28 GHz. Three different unit cells are investigated in this paper. Single-and double-beam reflectarrays are investigated. The reflectarrays are designed at 28 GHz with a physical size of 10k 9 10k. A pyramidal horn antenna is used for the feeding purpose. The focal-length-to-diameter (F/D) ratio is equal to one. Two different scenarios for single-beam reflectarrays are presented: one with a broadside direction and the other with a 10°tilt angle. The simulation results show that for the broadside single-beam scenario, it is possible to achieve a gain up to 28.5 dB, and a 1-dB gain-bandwidth up to 30.7%. On the other hand, the presented reflectarray for the single-beam design at 10°tilt angle gives a gain of about 26.4 dB, a side lobe level (SLL) of about-15.6 dB, and a 19.3% gain-bandwidth. For the double-beam reflectarray, four different designs at different angles of 5°, 10°, 15°, and 20°have been simulated and compared. Moreover, the simulation results on the double-beam reflectarray show that the double-beam design at 10°is better from the gain and SLL perspectives. Two prototypes for broadside single-beam reflectarrays have been fabricated and measured. The measurement results show a good match with the simulation results. Gain flatness is guaranteed for both the simulated and measured results over the band of interest.

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“…A block adaptation is a processor based on the adaptive signal processor, and the adaptation is made on the program level. In [2] made the development of synthesis algorithms of the amplitude-phase distribution of hybrid reflector antenna, which must be implemented in the adaptive processor. The complexity of these algorithms require the use of multi-processor computer systems (MCS) [3].…”

Section: Introductionmentioning

confidence: 99%