Results 251 to 260 of about 5,510 (299)

Swarm Precise Orbit Determination and ionosperic signatures

open access: yes, 2018
Schreiter, Lucas Fabian   +3 more
openaire   +1 more source

Precision orbit determination for Topex

Advances in Space Research, 1990
The ability of radar altimeters to measure the distance from a satellite to the ocean surface with a precision of the order of 2 cm imposes unique requirements for the orbit determination accuracy. The orbit accuracy requirements will be especially demanding for the joint NASA/CNES Ocean Topography Experiment (Topex/Poseidon).
B.D. Tapley   +3 more
openaire   +1 more source

Precise Orbit Determination for NavIC Satellites

2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2021
Precise Orbit Determination (POD) is an important process for navigation applications like Precise Point Positioning (PPP) and Real Time Kinematics (RTK). Earlier researchers have carried out extensive research for GNSS constellations placed in Medium Earth Orbits (MEO) having dynamic behaviour different from Geo-Synchronous Orbits (GSO) satellites. In
B.N. Ramakrishana   +5 more
openaire   +1 more source

Antenna for precise orbit determination

Acta Astronautica, 2009
Abstract The ESA SWARM mission will consist of three satellites that will measure the Earth magnetic field. The system calls for metre accuracy knowledge of the measurement locations. To achieve this a GPS receiver is used. At least four GPS signals are tracked to determine the code and carrier ranges, from which the position can be derived.
Johan Wettergren   +3 more
openaire   +1 more source

Precise Orbit Determination of CubeSats

2022
CubeSats are faced with some limitations, mainly due to the limited onboard power and the quality of the onboard sensors. These limitations significantly reduce CubeSats' applicability in space missions requiring high orbital accuracy. This thesis first investigates the limitations in the precise orbit determination of CubeSats and next develops ...
openaire   +2 more sources

Simulation of precise orbit determination of lunar orbiters

Chinese Astronomy and Astrophysics, 2005
Abstract Based on the ongoing Chinese lunar exploration mission, i.e. the “Chang'e 1” project, precise orbit determination of lunar orbiters is analyzed for the actual geographical distribution and observational accuracy of the Chinese united S-band (USB) observation and control network as well as the very long baseline interferometry (VLBI) tracking
Xiao-gong Hu, Cheng Huang, Yong Huang
openaire   +1 more source

Precise orbit determination for lunar satellite

Acta Astronautica, 2002
Lunar satellite in the polar orbit is the most popular concept in the recent and future lunar exploration missions for finding the water and other objectives. The motion and perturbed solution of lunar satellite are distinctly different from that of the earth satellite because the central body of the satellite, the Moon, is not the same as the Earth ...
Liu Lin, Liu Yingchun
openaire   +1 more source

ICESat-2 Precision Orbit Determination Performance

2020
<p>The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) mission launched on September 15<sup>th</sup>, 2018, with the primary goal of measuring ice sheet topographic change. The fundamental measurement used to achieve mission science objectives is the geolocation of individual photon bounce points.
Taylor Thomas   +5 more
openaire   +1 more source

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