Results 21 to 30 of about 38,036 (246)
Low frequency error analysis and calibration for multiple star sensors system of GaoFen7 satellite
Geo-spatial Information Science, 2022 The GaoFen7 (GF7) optical satellite is the first Chinese civilian sub-meter high-resolution stereo mapping satellite and is equipped with a double linear array camera and laser altimeter to achieve large-scale topographic mapping. To improve the accuracy
Yanli Wang +3 more
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Fault Tolerant Attitude and Orbit Determination System for Small Satellite Platforms
Aerospace, 2022 Small satellite platforms are experiencing increasing interest from the space community, because of the reduced cost and the performance available with current technologies.
Andrea Colagrossi, Michèle Lavagna
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Low-Cost Orientation Determination System for CubeSat Based Solely on Solar and Magnetic Sensors
Sensors, 2023 CubeSats require accurate determination of their orientation relative to the Sun, Earth, and other celestial bodies to operate successfully and collect scientific data.
Yerkebulan Nurgizat +4 more
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Determinants of psychotherapists’ attitudes to online psychotherapy
Frontiers in Psychiatry, 2023 IntroductionOnline psychotherapy is a form of work that is becoming more and more popular. Public health problems, such as COVID-19, forced mental health professionals and patients to incorporate new methodologies such as the use of electronic media and internet to provide follow-up, treatment and also supervision.
Emilia Rutkowska +10 more
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Spacecraft Relative Attitude Determination [PDF]
2010 IEEE Aerospace Conference, 2010 A method to determine the relative attitudes between three spacecraft is developed. 1 2 The method requires four direction measurements between the three spacecraft. The simulation results and covariance analysis show that the method's error falls within a three sigma boundary without exhibiting any singularity issues.
Goh, Shu Ting +2 more
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A Tutorial on Horizon-Based Optical Navigation and Attitude Determination With Space Imaging Systems
IEEE Access, 2021 Images of a nearby celestial body collected by a camera on an exploration spacecraft contain a wealth of actionable information. This work considers how the apparent location of the observed body’s horizon in a digital image may be used to infer ...
John A. Christian
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Aerospace, 2019 In this paper, the attitude determination problem from two vector observations is revisited, incorporating the redundant equality constraint obtained by the dot product of vector observations.
Jin Wu, Shangqiu Shan
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Attitude Sensor from Ellipsoid Observations: A Numerical and Experimental Validation
Sensors, 2020 The preliminary design and validation of a novel, high accuracy horizon-sensor for small satellites is presented, which is based on the theory of attitude determination from ellipsoid observations.
Dario Modenini +2 more
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Aerospace, 2020 JAXA’s ERG (Exploration of Energization and Radiation in Geospace) Spacecraft, which is nicknamed Arase, was launched on 20 December 2016. Arase is a spin-stabilized and Sun-oriented spacecraft. Its mission is to explore how relativistic electrons in the
Halil Ersin Soken +5 more
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Attitude determination and control for centrifugal tether deployment on the ESTCube-1 nanosatellite; pp. 242–249 [PDF]
Proceedings of the Estonian Academy of Sciences, 2014 This paper presents the design, development, and pre-launch characterization of the ESTCube-1 Attitude Determination and Control System (ADCS). The design driver for the ADCS has been the mission requirement to spin up the satellite to 360 deg à sâ1 ...
Andris Slavinskis +22 more
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