A5066933129- Satellite Communication Systems
- Spacecraft Design and Technology
- Antenna Design and Optimization
- Inertial Sensor and Navigation
- Antenna Design and Analysis
- Advanced Research in Science and Engineering
- Astronomical Observations and Instrumentation
- Medical and Agricultural Research Studies
- Analytical Chemistry and Sensors
- Advanced Antenna and Metasurface Technologies
- Cybersecurity and Information Systems
- Advanced Chemical Sensor Technologies
- Gas Sensing Nanomaterials and Sensors
- Structural Analysis and Optimization
- Advanced Computational Techniques in Science and Engineering
- Magnetic and Electromagnetic Effects
- Radio Astronomy Observations and Technology
- Silicon Nanostructures and Photoluminescence
- Advanced Control and Stabilization in Aerospace Systems
- Spacecraft Dynamics and Control
- Millimeter-Wave Propagation and Modeling
- Varied Academic Research Topics
Al-Farabi Kazakh National University
2021-2024
In this study, a new spiral dual-band antenna integrated with an optical system for small CubeSat spacecraft was proposed. It is challenging to design limited space on platform. To improve the utilization, designed based concept of not occupying sides CubeSat. A feature proposed its compactness, operation in L- and S-bands, possibility integration cameras. As result reflection coefficients -18 dB -23 gain 6.8 dBi 7.4 dBi, respectively, were achieved at resonant frequencies 1.7 GHz 2.45 GHz....
This article discusses the possibilities of using fractal antenna systems in wireless communication systems, their features and main advantages them. The presence property self-similarity structures allows them to be implemented creation broadband multiband antennas. Therefore, today capabilities a are widely studied such as 5G, 4G (LTE), Bluetooth, WLAN, WiMAX, GPS others. also presents characteristics antennas practical implementation model Ansys HFSS program. Simulation results,...
This paper presents a dual-band optical imaging system-integrated patch antenna based on an anisotropic fractal for Earth-observation CubeSats. The operates at S-band frequencies. size of the is chosen to match end face antenna's main characteristics are studied using simulation in Computer Simulation Technology (CST) software; prototypes developed verify these characteristics. Double-sided Glass Epoxy Sheet FR-4 used develop prototype. By studying prototype, realized gain up 4 dBi and 2.15...
Antenna systems used in small spacecraft are a very important element of the spacecraft. The limited size and operating features these devices adjust development processes subsystems for them. In this work, wire microstrip antennas will be modeled studied. software environment chosen modeling was CST Microwave Studio, which allows ultra-high-frequency as close to reality possible. dipole antenna at frequency 433 MHz 2200 simulated. dimensions selected according calculations, materials...
The work is devoted to the creation of a prototype navigation module intended for civil scientific rocket. study covers design process, from selection hardware components development electrical circuits and modular architecture device. project based on integration global satellite system (GNSS) inertial (INS), which allows achieving high accuracy in determining coordinates parameters rocket's motion real time. use STM32F777VI microcontroller, provides data processing, control peripheral...
The paper presents an S-band patch and a wire helical antenna integrated with optical remote sensing camera for efficient placement on the body of CubeSat nanosatellites. overall dimensions antennas correspond to geometric parameters spacecraft, where one side cube is 100 mm * mm. made double layer fiberglass FR-4 thickness 1.6 mm, copper active (radiating) plane in form Zhanabaev's anisotropic fractal. There are two resonant frequencies range from 1MHz 4 GHz, center 2.05 GHz 2.45 GHz....
Gas sensors are important devices in various industrial and environmental monitoring applications. Toluene chloroform harmful non-polar gases that produced combustion processes associated with air pollution respiratory diseases. Porous silicon (PS) has shown promising results as a material for ammonia ethanol gas sensing However, there is potential further improvement by optimizing their surface properties Chemical treatment been widely utilized to modify the characteristics of materials,...
One of the future challenges increasing harnessed solar power is efficiency using CubeSat sides. approaches integrated antenna systems with panels or payloads. This study proposes a new approach to use in remote sensing missions. In this approach, due integration system payload (in our case, camera), it possible achieve significant increase generation. Calculations are carried out for cases when optical (α = 0°), which implies that they one plane, second case spaced at an angle α 90° and...
The inequality of the universal gas constant difference in heat capacity a at pressure with volume is proved.The falsifications using pressure, false enthalpy, Poisson adiabat, Laplace sound speed, Hugoniot based on use equality volume, have been established.The dependence temperature an adiabatic has established.On basis new formulas are derived: adiabats ideal gas, speed sound, and shock wave.The variability field gravity proved it indicated that specific coefficient gas-dynamic...
The CubeSat concept has become very popular with both university groups and researchers, space agencies, governments companies. offers a fast affordable way for wide range of stakeholders to be active in space. Due the high degree modularity widespread use offtheshelf commercial subsystems, projects can prepared flight much faster than using traditional satellite schedules usually within one two years. In this paper, we have considered model an S X band patch antenna nanosatellites field...