Results 81 to 90 of about 796 (242)
Assessment of TLE-Based Orbit Determination and Prediction for Cubesats
, 2019 The IceCube satellite is a 3U cubesat which was deployed from the International Space Station Nanoracks in May 2017. IceCube uses onboard Global Positioning System (GPS) measurements for both science data processing and orbit determination; additionally,
Smith, Alexander
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Response of the low ionosphere to X-ray and Lyman-a solar flare emissions
, 2013 International audience[1] Using soft X-ray measurements from detectors onboard the Geostationary Operational Environmental Satellite (GOES) and simultaneous high-cadence Lyman-a observations from the Large Yield Radiometer (LYRA) onboard the Project for ...
Pacini, Alessandra +7 more
core +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada +4 more
wiley +1 more source
, 2006 In this paper the impact of relative position errors on the interferometric baseline performance of multistatic Synthetic Aperture Radar (SAR) satellites flying in a close formation is analyzed and assessed.
Kohlhase, Andreas +2 more
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Use of spacecraft onboard sensors for autonomous collision avoidance [PDF]
La popolazione nello spazio sta crescendo rapidamente, così come la probabilità di collisioni in orbita, rendendo le operazioni spaziali sempre più complesse e costose.
Campiti, Giulio
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International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani +2 more
wiley +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley +1 more source
Measurements of Forbush decreases at Mars: both by MSL on ground and by MAVEN in orbit
, 2018 The Radiation Assessment Detector (RAD), on board Mars Science Laboratory’s (MSL) Curiosity rover, has been measuring ground level particle fluxes along with the radiation dose rate at the surface of Mars since August 2012. Similar to neutron monitors at
Cary Zeitlin +15 more
core +1 more source
Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel +2 more
wiley +1 more source
Experience Gained From Launch and Early Orbit Support of the Rossi X-Ray Timing Explorer (RXTE)
, 1996 this paper reports the results to date of early mission support provided by the personnel of the Goddard Space Flight Center Flight Dynamics Division (FDD) for the Rossi X-Ray Timing Explorer (RXTE) spacecraft.
Harman, R. R. +7 more
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