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Nonconservative force model parameter estimation strategy for topex/poseidon precision orbit determination
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Luthcke, S. B. Marshall, J. A. |
| Copyright Year | 1992 |
| Description | The TOPEX/Poseidon spacecraft was launched on August 10, 1992 to study the Earth's oceans. To achieve maximum benefit from the altimetric data it is to collect, mission requirements dictate that TOPEX/Poseidon's orbit must be computed at an unprecedented level of accuracy. To reach our pre-launch radial orbit accuracy goals, the mismodeling of the radiative nonconservative forces of solar radiation, Earth albedo an infrared re-radiation, and spacecraft thermal imbalances cannot produce in combination more than a 6 cm rms error over a 10 day period. Similarly, the 10-day drag modeling error cannot exceed 3 cm rms. In order to satisfy these requirements, a 'box-wing' representation of the satellite has been developed in which, the satellite is modelled as the combination of flat plates arranged in the shape of a box and a connected solar array. The radiative/thermal nonconservative forces acting on each of the eight surfaces are computed independently, yielding vector accelerations which are summed to compute the total aggregate effect on the satellite center-of-mass. Select parameters associated with the flat plates are adjusted to obtain a better representation of the satellite acceleration history. This study analyzes the estimation of these parameters from simulated TOPEX/Poseidon laser data in the presence of both nonconservative and gravity model errors. A 'best choice' of estimated parameters is derived and the ability to meet mission requirements with the 'box-wing' model evaluated. |
| File Size | 1854358 |
| Page Count | 44 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930004184 |
| Archival Resource Key | ark:/13960/t2t48mb3k |
| Language | English |
| Publisher Date | 1992-11-01 |
| Access Restriction | Open |
| Subject Keyword | Ground Support Systems And Facilities (space) Root-mean-square Errors Satellite Drag Atmospheric Effects Satellite Orbits Orbit Calculation Orbital Position Estimation Poseidon Satellite Albedo Gravitational Effects Precision Nonconservative Forces Satellite Perturbation Topex Solar Radiation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
