Results 51 to 60 of about 10,144 (241)
Comparison of TRIAD+EKF and TRIAD+UKF Algorithms for Nanosatellite Attitude Estimation
WSEAS transactions on systems and control, 2022 Two most commonly used sensors on nanosatellites are magnetometer and sun sensor. In this paper, magnetometer and sun sensor measurements are combined gyro measurements to produce enhanced attitude estimation.
Mehmet Asim Gokcay, C. Hajiyev
semanticscholar +1 more source
Determination of relative position and orientation of nanosatellites by video image analysis
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016 The article discusses the option of using video images to determine the orientation and the position of the second nanosatellite relative to the first one by a series of snapshots made by the first nanosatellite.
S. P. Simakov, E. V. Ustyugov
doaj +1 more source
Progress in satellite quantum key distribution
, 2017 Quantum key distribution (QKD) is a family of protocols for growing a private encryption key between two parties. Despite much progress, all ground-based QKD approaches have a distance limit due to atmospheric losses or in-fibre attenuation.
Arrazola, Juan Miguel +2 more
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Design and Implementation of a Narrow-Band Intersatellite Network with Limited Onboard Resources for IoT [PDF]
, 2019 Satellite networks are inevitable for the ubiquitous connectivity of M2M (machine to machine) and IoT (internet of things) devices. Advances in the miniaturization of satellite technology make networks in LEO (Low Earth Orbit) predestined to serve as a ...
Briess, Klaus +2 more
core +1 more source
Spacecraft magnetic attitude control using approximating sequence Riccati equations [PDF]
, 2015 This paper presents the results of a spacecraft attitude control system based on magnetic actuators designed for low Earth orbits. The control system is designed by using a nonlinear control technique based on the approximating sequence of Riccati ...
Bernelli Zazzera, Franco +2 more
core +1 more source
RUDN Journal of Engineering Research, 2017 In this paper, we present a technique for determining the thermal conductivity of an anisotropic composite material (CM) of a body of nanosatellite on a contact heating installation. A description is given of the technique of a thermal physics experiment
S V Reznik +4 more
doaj +1 more source
Nanosatellite fabrication and analysis [PDF]
, 2012 The advancements in technologies used in the aerospace industry have allowed universities to experiment with and develop small-scale satellites. Universities are taking advantage of the relatively low development costs of nanosatellite programs to give ...
Harrison, Sam +2 more
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Nature Communications, 2020 Healable conductive materials have received considerable attention. However, their practical applications are impeded by low electrical conductivity and irreversible degradation after breaking/healing cycles. Here we report a highly conductive completely
Daewoo Suh +9 more
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Zoo Biology, EarlyView.ABSTRACT The Harpy Eagle (Harpia harpyja), one of the largest birds of prey in the world, is threatened with extinction throughout its entire area of occurrence in the Neotropics. While conservation efforts for the wild populations are crucial, it is also important to focus on ex situ conservation actions.
Mylena Kaizer +7 more
wiley +1 more source
Remote SensingDetecting and characterizing continuous changes on Earth’s surface has become critical for planning and development. Since 2016, Planet Labs has launched hundreds of nanosatellites, known as Doves.
Rafael Luís Silva Dias +5 more
semanticscholar +1 more source