Results 111 to 120 of about 40,224 (152)
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Proceedings of the International Astronomical Union, 2023
In this work we reviewed the Gauss method to infer the orbits of minor bodies of the solar system, as the identification of optimization parameters to infer the orbital elements of two asteroids near to the Earth (NEAs): 5587 (1990 SB) and 4953 (1990 MU))
Johana Murcia +5 more
semanticscholar +1 more source
In this work we reviewed the Gauss method to infer the orbits of minor bodies of the solar system, as the identification of optimization parameters to infer the orbital elements of two asteroids near to the Earth (NEAs): 5587 (1990 SB) and 4953 (1990 MU))
Johana Murcia +5 more
semanticscholar +1 more source
IEEE Aerospace Conference
Low Earth orbit (LEO) satellite ephemeris error is analyzed for standalone (non-differential) and differential navigation. First, the range residual due to ephemeris error is derived for a standalone stationary receiver making range-type measurements to ...
Joe Saroufim, S. Hayek, Z. Kassas
semanticscholar +1 more source
Low Earth orbit (LEO) satellite ephemeris error is analyzed for standalone (non-differential) and differential navigation. First, the range residual due to ephemeris error is derived for a standalone stationary receiver making range-type measurements to ...
Joe Saroufim, S. Hayek, Z. Kassas
semanticscholar +1 more source
Aerial monitoring of slow moving convoys using elliptical orbits
European Journal of Control, 2019This article proposes a novel vector field based guidance scheme for tracking and surveillance by an aerial agent of a convoy moving along a possibly non-linear trajectory on the ground.
A. Borkar, V. Borkar, A. Sinha
semanticscholar +1 more source
, 2020
Errors in neutral atmospheric density are the dominant contributor to unrealistic orbital state-vector covariances in low Earth orbits (LEO). Density uncertainty is caused by model-uncertainty at spatial scales below and within the model resolution, as ...
F. Schiemenz, J. Utzmann, H. Kayal
semanticscholar +1 more source
Errors in neutral atmospheric density are the dominant contributor to unrealistic orbital state-vector covariances in low Earth orbits (LEO). Density uncertainty is caused by model-uncertainty at spatial scales below and within the model resolution, as ...
F. Schiemenz, J. Utzmann, H. Kayal
semanticscholar +1 more source
Remote Sensing
This study examines the impact of geomagnetic disturbances quantified by the Kp and Dst indices on the accuracy of single-frequency GPS positioning across mid-latitudes and the equatorial zone, with a focus on temporal and spatial positioning errors ...
Mario Bakota +3 more
semanticscholar +1 more source
This study examines the impact of geomagnetic disturbances quantified by the Kp and Dst indices on the accuracy of single-frequency GPS positioning across mid-latitudes and the equatorial zone, with a focus on temporal and spatial positioning errors ...
Mario Bakota +3 more
semanticscholar +1 more source
IEEE Transactions on Geoscience and Remote Sensing, 2018
Since the beginning of the altimeter mission TOPEX/Poseidon (T/P), followed by Jason-1 and Jason-2 on similar orbits, and many other missions on different orbits (ERS, EnviSat, etc.), mean sea level (MSL) products became essential for the comprehension ...
L. Zawadzki +7 more
semanticscholar +1 more source
Since the beginning of the altimeter mission TOPEX/Poseidon (T/P), followed by Jason-1 and Jason-2 on similar orbits, and many other missions on different orbits (ERS, EnviSat, etc.), mean sea level (MSL) products became essential for the comprehension ...
L. Zawadzki +7 more
semanticscholar +1 more source
Positioning Error Estimation Method for Short-Arc Angles-Only Initial Orbit Determination
Journal of Guidance Control and DynamicsThe development of space surveillance capabilities has received increased emphasis with time. Suitable evaluation parameters are investigated to analyze the effects of multiple factors on short-arc angles-only initial orbit determination.
Zhao Feng +3 more
semanticscholar +1 more source
Journal of Applied Remote Sensing
. Inaccurate solar vector orientation knowledge can considerably deteriorate calibration results for the Visible Infrared Imaging Radiometer Suite (VIIRS).
N. Lei +3 more
semanticscholar +1 more source
. Inaccurate solar vector orientation knowledge can considerably deteriorate calibration results for the Visible Infrared Imaging Radiometer Suite (VIIRS).
N. Lei +3 more
semanticscholar +1 more source
, 2020
For addressing the position and attitude control of a fully-actuated 6-degree-of-freedom (6-DOF) rigid body, a new configuration error function is designed, and the configuration error vector is deduced as the gradient of this function, where the ...
Yulin Wang +4 more
semanticscholar +1 more source
For addressing the position and attitude control of a fully-actuated 6-degree-of-freedom (6-DOF) rigid body, a new configuration error function is designed, and the configuration error vector is deduced as the gradient of this function, where the ...
Yulin Wang +4 more
semanticscholar +1 more source
Massive MIMO Downlink Transmission for Multiple LEO Satellite Communication
IEEE Transactions on CommunicationsWe investigate massive multiple-input multiple-output (MIMO) downlink (DL) transmission for multiple low-earth-orbit satellite communication systems. We establish the signal and channel models, and reveal that the signals received by each user terminal ...
Ziyu Xiang +3 more
semanticscholar +1 more source