Results 261 to 270 of about 2,642,880 (286)

Precision orbit determination for TOPEX/POSEIDON

Journal of Geophysical Research: Oceans, 1994
The TOPEX/POSEIDON mission objective requires that the radial position of the spacecraft be determined with an accuracy better than 13 cm RMS (root mean square). This stringent requirement is an order of magnitude below the accuracy achieved for any altimeter mission prior to the definition of the TOPEX/POSEIDON mission.
B. D. Tapley, J. C. Ries, G. W. Davis, R. J. Eanes, B. E. Schutz, C. K. Shum, M. M. Watkins, J. A. Marshall, R. S. Nerem, B. H. Putney, S. M. Klosko, S. B. Luthcke, D. Pavlis, R. G. Williamson, N. P. Zelensky   +14 more
openaire   +1 more source

Precise orbit determination for CAPS project

2010 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC), 2010
The Chinese Area Positioning System (CAPS) is a new type of satellite navigation systems. The geostationary satellites for normal communication with 2 or 3 sets of inclined geostationary orbit (GEO) satellites are employed to construct a satellite navigation system.
Wu Wenjun, Li Zhigang, Chen Xuan, Lei Hui, Yang Xuhai, Feng Chugang   +5 more
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Approaches to CHAMP precise orbit determination

2003
With a tailored gravity field model, the dynamic restitution of the CHAMP orbit can be carried out quite accurately. The solution can be based on the onboard accelerometer data or on dynamical models with additional parameters. Beside the dynamic mode, also a geometric/kinematic satellite position determination is implemented in the GFZ POD software ...
Neumayer, K., König, R., Zhu, S.
openaire   +3 more sources

Problem of algorithm in precision orbit determination

Science in China Series A: Mathematics, 1999
In orbit determination, the precision ephemeris and state transition matrix are usually obtained by solving two groups of ordinary differential equations with numerical integration method due to the complexity of the force models. A kind of simplified analytical method to compute the state transition matrix is given.
Lin Liu, Qiang Zhang, Xinhao Liao
openaire   +1 more source

Precise orbit determination for the GOCE satellite using GPS

Advances in Space Research, 2007
Abstract Apart from the gradiometer as the core instrument, the first ESA Earth Explorer Core Mission GOCE (Gravity field and steady-state Ocean Circulation Explorer) will carry a 12-channel GPS receiver dedicated for precise orbit determination (POD) of the satellite.
Adrian Jaggi, Urs Hugentobler, P Visser
exaly   +5 more sources

I: PRECISE ORBIT DETERMINATION AND GRAVITY FIELD MODELLING: Strategies for Precise Orbit Determination of Low Earth Orbiters Using the GPS

Space Science Reviews, 2003
Considerable experience accumulated during the past decade in strategies for processing GPS data from ground-based geodetic receivers. First experience on the use of GPS observations from spaceborne receivers for orbit determination of satellites on low altitude orbits was gained with the launch of TOPEX/POSEIDON ten years ago.
U. Hugentobler, G. Beutler
openaire   +1 more source

Precise orbit determination for the maneuvering satellites

Routine and occasional/emergency orbital maneuvers are essential for many satellites to maintain their optimal trajectory and to achieve a wide range of operational objectives in a continuous way. However, incorrectly modelled highly dynamic changes of the orbit during maneuvers can significantly reduce the accuracy of precise orbit determination (POD)
Kalarus, Maciej, Arnold, Daniel, Padovan, Sebastiano, Dach, Rolf, Jäggi, Adrian   +4 more
openaire   +1 more source

Effect of GPS orbit errors on ICESat precision orbit determination

Astrodynamics Specialist Conference, 2000
To achieve the orbit determination requirement of the EOS ICESat, which is 5 cm and 20 cm in radial and horizontal components, respectively, using the GPS tracking system, it is required to use the precise GPS ephemeris. Three different levels of GPS orbit errors were generated through a simulation, and the effect of these GPS orbit errors on ICESat ...
H. Rim, C. Webb, B. Schutz
openaire   +1 more source

Kinematic Precise Orbit Determination for Gravity Field Determination

2005
In this paper we first present approaches and results in precise orbit determination (POD) for satellitesin Low Earth Orbit (LEO) based on one or two frequency GPS measurements and, secondly, we focus on the relations between kinematic POD and gravity field determination.
Švehla, Dražen, Rothacher, M.
openaire   +2 more sources

Advances in precision orbit determination

Guidance, Navigation, and Control Conference, 1997
B. Tapley, J. Ries, B. Tapley, J. Ries
openaire   +1 more source