scholarly journals Modeling of the Eros gravity field as an ellipsoidal harmonic expansion from the NEAR Doppler tracking data

2002 ◽  
Vol 29 (8) ◽  
pp. 72-1-72-3 ◽  
Author(s):  
Romain Garmier ◽  
Jean-Pierre Barriot ◽  
Alexander S. Konopliv ◽  
Donald K. Yeomans
Keyword(s):  
Gravity Field ◽  
Tracking Data ◽  
Ellipsoidal Harmonic ◽  
Doppler Tracking

The Accuracy Assessment of Precise Orbits Computed from Doppler Tracking Data

1997 ◽  
Vol 45 (4) ◽  
pp. 451-469
Author(s):  
George W. Davis ◽  
John C. Ries ◽  
Byron D. Tapley
Keyword(s):  
Accuracy Assessment ◽  
Tracking Data ◽  
Doppler Tracking

Recoverability of Callisto gravity field influenced by orbiter mission characteristics

2021 ◽  
Author(s):  
William Desprats ◽  
Daniel Arnold ◽  
Michel Blanc ◽  
Adrian Jäggi ◽  
Mingtao Li ◽  
...  
Keyword(s):  
Gravity Field ◽  
Noise Model ◽  
Force Model ◽  
Tracking Data ◽  
Science Center ◽  
National Space ◽  
Beta Angle ◽  
Dynamical Parameters ◽  
Range Rate ◽  
Orbiter Mission

<p>The exploration of Callisto is part of the extensive interest in the icy moons characterization. Indeed, Callisto is the Galilean moon with the best-preserved records of the Jovian system formation. Led by the National Space Science Center (NSSC), Chinese Academy of Science (CAS), the planned Gan De mission aims to send an orbiter around Callisto in order to characterize its surface and interior. Potential orbit configurations are currently under study for the Gan De mission proposal.</p><p>As part of a global characterization of Callisto, its gravity field can be inferred using radio tracking data from an orbiter. Mission characteristics such as orbit type, Earth beta angle and solar elongation will have a direct influence on the recoverability of its gravity field parameters. In this study, we will analyse this influence from closed-loop simulations using the planetary extension of the Bernese GNSS Softwareai.</p><p>A number of reference orbits with different orbital characteristics will be selected for the Gan De mission and, using an extended force model, will be propagated from different starting dates and different initial Earth beta angles. Realistic Doppler tracking data (2-way X-band Doppler range rate) will be simulated as measurements from ground stations, with a dedicated noise model. These observations will then be used to reconstruct the orbit along with dynamical parameters. The focus of this presentation will be on the quality of the retrieved gravity field parameters and tidal Love number k2.</p>

scholarly journals Dynamical Constants and Reference Parameters for Mars

1980 ◽  
Vol 56 ◽  
pp. 325-328
Author(s):  
William H. Michael ◽  
George M. Kelly
Keyword(s):  
Seasonal Variation ◽  
Rotation Rate ◽  
Direct Determination ◽  
Time Span ◽  
Tracking Data ◽  
Doppler Tracking ◽  
Reference Parameters ◽  
Fundamental Reference ◽  
Precession Constant

AbstractDynamical constants and other fundamental reference parameters for Mars have been derived from analyses of Viking lander ranging and Doppler tracking data covering a time span of nearly four years. Precise values have been obtained for the coordinates of the spin axis and for the rotation rate, suggesting that these Viking-derived values are definitive and are suitable for adoption by the IAU. Preliminary results have been obtained for a small seasonal variation in the rotation rate, and progress has been made toward a direct determination of the precession constant.

Precision orbit determination for TOPEX/Poseidon using TDRSS doppler tracking data

1995 ◽  
Vol 16 (12) ◽  
pp. 89-92
Author(s):  
F.J. Lerch ◽  
C.E. Doll ◽  
J.A. Marshall ◽  
S.B. Luthcke ◽  
R.G. Williamson ◽  
...  
Keyword(s):  
Orbit Determination ◽  
Tracking Data ◽  
Precision Orbit Determination ◽  
Doppler Tracking

Earth's Gravity Field Derived from Grace Satellite Tracking Data

2006 ◽  
Vol 49 (3) ◽  
pp. 651-656 ◽  
Author(s):  
Xu-Hua ZHOU ◽  
Houtse HSU ◽  
Bin WU ◽  
Bi-Bo PENG ◽  
Yang LU
Keyword(s):  
Gravity Field ◽  
Satellite Tracking ◽  
Tracking Data ◽  
Earth’S Gravity Field ◽  
Grace Satellite

Processing of GRACE FO satellite to satellite tracking data using the GRACE SIGMA software

2020 ◽  
Author(s):  
Mathias Duwe ◽  
Igor Koch ◽  
Jakob Flury ◽  
Akbar Shabanloui
Keyword(s):  
Gravity Field ◽  
Satellite Tracking ◽  
Background Modeling ◽  
Gravity Potential ◽  
Laser Ranging ◽  
Tracking Data ◽  
Variational Equations ◽  
Range Rate ◽  
Orbit Types ◽  
Computing Approach

<p>At our Institute we compute monthly gravity potential solutions from GRACE/GRACE-FO level 1B data by using the variational equations approach. The gravity field is recovered with our own MATLAB software "GRACE-SIGMA" that was recently updated in order to reduce the calculation time with parallel computing approach by approx. 80%. Also the processing chain has changed to update the background modeling and we made tests with different orbit types and different parametrizations. We discuss progress to include laser ranging interferometer data in gravity field solutions. We present validation results and analyze the properties of postfit range-rate residuals.</p>

Analysis of Three-Way Doppler Tracking Data from the Lunar Reconnaissance Orbiter Mission

2010 ◽  
Author(s):  
Eric Smith ◽  
Patrick Morinelli ◽  
Michael Moreau ◽  
Dennis Woodfork ◽  
Rivers Lamb
Keyword(s):  
Tracking Data ◽  
Lunar Reconnaissance Orbiter ◽  
Doppler Tracking ◽  
Orbiter Mission
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