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Communication System for Nanosatellite Earth Observation

Advances in Aerospace Science and Technology 2021年第3期6卷 134-157页

作者： nickolay zosimovych School of Robotics Xi’an Jiaotong-Liverpool University Suzhou China

This paper proposes a communication system for nanosatellite Earth observa-tion preliminary design technique as useful tools for managing and improving various aspects of regional and national resources. Under analysis was pro-posed a design process for the low Earth orbit nanosatellite communication system. In proposed paper have been formulated and solved next goals: re-viewed Earth observation systems and studied their design parameters, ana-lyzed the on-board antennas design background and provided analytical esti-mations, such as design a passband quadrature phase shift keying transmitter and receiver in Simulink, was obtained a bit error rate curves by using a Sim-ulink/MathWorks, generated an offset quadrature phase shift keying waveform and investigated their characteristics, observed and analyzed the diagrams, constellation, and the signal trajectories of quadrature phase shift keying ac-cording contemporary design concept. As a result, this allows to propose in-novative communication system design techniques applied for the nanosatel-lite category.

关键词： Nanosatellite Signal Communication Satellite Antenna Modulation

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Flight Transient Estimation of VTOL Aircraft with Propellers

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Advances in Aerospace Science and Technology 2022年第1期7卷 85-95页

作者： nickolay zosimovych Robotics Xi’an Jiaotong Liverpool University Dushu Lake Higher Education Town Suzhou Industrial Park Suzhou China

Methodological issues associated with the determination of the vertical take-off and landing aerodynamic parameters equipped with two rotary propellers during take-off and hovering, descent and landing are studied in the proposed article. During the computer simulation process, kinematics parameters diagrams were made, aerodynamic coefficients and propellers thrust components at all stages of aircraft take-off were estimated. That numerical data can be used in a preliminary stage of aerodynamic design for the vertical take-off and landing aircraft and electric drones at the determination of control and equalization elements geometric and kinematic parameters.

关键词： Vertical Take-Off and Landing (VTOL) Drone Propeller Transient Thrust Vector Modeling Kinematic Aerodynamic Coefficient

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