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A parametric design method of nanosatellite close-range formation for on-orbit target inspection

Chinese Journal of Aeronautics 2023年第10期36卷 194-209页

作者： Bohan JIAO Qinbo SUN Hongyu HAN Zhaohui DANG School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China

This paper proposes an efficient design method for nano satellites formation flying near a large space target to perform ultra-close inspection missions.A parametric model for periodic relative motion between two satellites is firstly proposed through a detailed analysis of the relative orbital *** is proved that the existing periodic solutions of satellite relative motion such as in-plane 2:1 elliptic and circular periodic relative orbits both belong to the ellipsoid family of periodic relative *** motion planes and their locations and orientations of the general periodic relative orbits are then determined as the analytic functions of the initial relative *** maximal and minimal distances from the relative orbit to the origin are further analytically calculated too.A formation design algorithm is then proposed for optimal observation of feature points of the target considering various requirements of collision avoidance and observable distance by using this parametric *** examples about target inspection are introduced to quantitively evaluate and verify the models and *** simulation results are well consistent with the theoretical predictions,showing that the design proposed can be potentially applied for future practical on-orbit service missions.

关键词： Ellipsoid family Formation flying nanosatellite Periodic relative orbit Target tracking and inspection

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Communication System for nanosatellite Earth Observation

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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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Qualification and validation test methodology of the open-source CubeSat FloripaSat-I

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Journal of Systems Engineering and Electronics 2020年第6期31卷 1230-1244页

作者： MARCELINO Gabriel Mariano FILHO Edemar Morsch MARTINEZ Sara Vega DE MATTOS AndréMartins Pio SEMAN Laio Oriel SLONGO Leonardo Kessler BEZERRA Eduardo Augusto Department of Electrical Engineering Federal University of Santa CatarinaFlorianópolis 88040-900Brazil SENAI Institute of Innovation in Embedded Systems Florianópolis 88054-700Brazil School of Sea Science and TechnologyUniversity of Vale do ItajaíItajaí88302-901Brazil

The FloripaSat-I project consists of an initiative from the Federal University of Santa Catarina(UFSC),in Brazil,to train students to design,test and integrate innovative space *** group just developed its first open-source CubeSat,the FloripaSat-I,which aims to empower students to develop space systems through a practical approach,where they have full control of the design and test of a real *** project has already gone through all the stages of a CubeSat mission prior to the launching and operation stages.A prototype of the satellite,as well the engineering models 1 and 2(EM-I and EM-II)were *** expertise provided by the engineering models allows the development of a functional flight model(FM).This paper presents the validation and qualification tests that pass various FloripaSat-I models,from the engineering model to the flight *** stages of the project are described,the tests performed in each phase,as well as the lessons ***,this paper serves as a guidance for other university teams that want to test their own CubeSats,as well as teams that want to use the open-source hardware and software left as heritage by this project.

关键词： embedded system nanosatellite cubesats test methodology

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