low earth orbit
Atmospheric influences on infrared-laser signals used for occultation measurements between Low Earth Orbit satellites
... Abstract. LEO-LEO infrared-laser occultation (LIO) is a new occultation technique between Low Earth Orbit (LEO) satellites, which applies signals in the short wave infrared spectral range (SWIR) ...
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Automatic trajectory planning for low-thrust active removal mission in Low-Earth Orbit
... into orbit over 10,000 objects (Rossi & Valsecchi, ...in Earth orbit. Recent studies have concluded that regions within Low Earth Orbit (LEO) have already reached a critical ...
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Automatic planning and scheduling of active removal of non-operational satellites in low earth orbit
... in Earth orbit. Recent studies have concluded that regions within Low Earth Orbit (LEO) have already reached a critical den- sity of objects which will eventually lead to a cascading ...
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Conical Linear Spiral Antenna for Tracking, Telemetry and Command of Low Earth Orbit Satellites
... Abstract—Conical log spiral antennas are famous for being appro- priate for tracking, telemetry and command (TT&C) applications in low earth orbit (LEO) satellites. In this work, a conical linear ...
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The role of high resolution geomagnetic field models for investigating ionospheric currents at low Earth orbit satellites
... at low Earth orbit (LEO) altitude, Ritter and Lühr (2006) investigated on the one hand the behavior of residuals in the total field, representing the signals from the auroral electrojet, and on the ...
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Remote automated multi generational growth and observation of an animal in low Earth orbit
... Colonization of other planets is deemed realistic [1]. This would mitigate against Earth’s periodic global extinction events [2] and the next ice age; our nearest relative, Neanderthal, went extinct in the last ice age. ...
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Initial Orbit Determination Error Analysis of Low-Earth Orbit Rocket Body Debris and Feasibility Study for Debris Cataloguing from One Optical Facility
... radar is a part of the larger Goldstone Deep Space Communications Complex, which is one of three sites that constitute the NASA Deep Space Network [22]. Nominally tasked with communicating with deep space missions, the ...
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Diagnosing low earth orbit satellite anomalies using NOAA 15 electron data associated with geomagnetic perturbations
... satellite orbit, solar and geomagnetic activities, satellite local time, and satellite construction ...the low Earth orbit (LEO) ...to low-energy electron fluxes of 30–100 keV and ...
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Solar Arrays and Battery Power Sources Conceptual Design for Low Earth Orbit Microsatellites
... Abstract: The power system is a vital subsystem in a spacecraft. As long as the spacecraft has power, it can perform its mission. Almost all other failures can be worked out by ground operations from ground stations but ...
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Experimental and analysis of Attitude Control System for Low Earth Orbit (LEO) Satellite using Magnetic Torquers and error estimation with unscented Kalman Filter
... the Low earth orbit. Low earth orbit satellite will have enormous amount of aerodynamic drag stinking the satellite body and gravitational attraction another ...the earth. ...
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SOLAR POWER PROFILE PREDICTION FOR LOW EARTH ORBIT SATELLITES
... To enable various missions, Low Earth Orbit (LEO) satellites are required to fulfill their requirements on power consumption to sustain their life in space. As typical ones use photovoltaic cells to ...
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An Assessment of Rare Earth Aluminates as Possible Radiation Shields for Artificial Satellites in Low Earth Orbit
... rare earth aluminates as possible radiation shield for artificial satellites in low Earth ...rare earth aluminates and aluminium oxide used as ...a low Earth orbit near ...
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Self-organising low Earth orbit constellations for Earth observation
... in Low Earth ...on Low Earth Orbits with repeat ground tracks, to shift their ground tracks such that they pass over targets on the Earth’s surface to which they are ...by low thrust ...
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Sunlight effects on the 3D polar current system determined from low Earth orbit measurements
... From satellites at sufficiently low altitudes, the associ- ated magnetic field is readily detectable. It was magnetic field measurements from ∼800 km altitude, using the TRIAD satellite, that enabled Iijima and ...
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The Cost of Clean Space- A Study of the Additional Fuel Costs of Launching Above Low Earth Orbit
... policy that is enforced, but is recognized as an industry standard. It could be effective, as long as the rate of launches does not overtake the rate of decay. Merely improving satellite design can also help mitigate ...
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Comparative analysis of low-Earth orbit (TROPOMI) and geostationary (GeoCARB, GEO-CAPE) satellite instruments for constraining methane emissions on fine regional scales: application to the Southeast US
... for optimizing methane emissions on regional scales down to ∼ 100 km when averaged over several years (Bergamaschi et al., 2013; Fraser et al., 2013; Monteil et al., 2013; Wecht et al., 2014a; Turner et al., 2015; Alexe ...
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The Research of Low Earth Orbit Prediction of Satellite Based on Deep Neural Network
... satellite orbit prediction, the long short-term memory neural network prediction is carried out based on the actual data of X, Y and Z coordinates of the satellite's geocentric inertial coordinate ...near-circular ...
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Atmospheric Remnants in the Low Earth Orbit Region around 200 km Altitude
... quite low pressures, of about 10 −9 Pa at 200 km ...the Earth magnet- ic field most of the charged particles coming from the Sun are deflected, but a considerable fraction of them still enters in the polar ...
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Synoptic ozone, cloud reflectivity, and erythemal irradiance from sunrise to sunset for the whole earth as viewed by the DSCOVR spacecraft from the earth–sun Lagrange 1 orbit
... with low earth orbit satel- lite data, a more complete comparison can be made with the assimilated ozone product from MERRA-2, the Modern-Era Retrospective Analysis for Research and Applications ...
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Study of Ionospheric Effects on Azimuth Imaging for Medium-Earth-Orbit SAR
... Abstract—The Medium-Earth-Orbit SAR (MEOSAR) is one of the most potential next-generation spaceborne SARs for its excellent performances. However, the MEOSAR may not be able to produce data useful for ...
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