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Geoid recovery using geophysical inverse theory applied to satellite to satellite tracking data
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gaposchkin, E. M. |
| Copyright Year | 2000 |
| Description | This report describes a new method for determination of the geopotential, or the equivalent geoid. It is based on Satellite-to-Satellite Tracking (SST) of two co-orbiting low earth satellites separated by a few hundred kilometers. The analysis is aimed at the GRACE Mission, though it is generally applicable to any SST data. It is proposed that the SST be viewed as a mapping mission. That is, the result will be maps of the geoid or gravity, as contrasted with determination of spherical harmonics or Fourier coefficients. A method has been developed, based on Geophysical Inverse Theory (GIT), that can provide maps at a prescribed (desired) resolution and the corresponding error map from the SST data. This computation can be done area by area avoiding simultaneous recovery of all the geopotential information. The necessary elements of potential theory, celestial mechanics, and Geophysical Inverse Theory are described, a computation architecture is described, and the results of several simulations presented. Centimeter accuracy geoids with 50 to 100 km resolution can be recovered with a 30 to 60 day mission. |
| File Size | 3244173 |
| File Format | |
| Language | English |
| Publisher Date | 2000-08-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Gravitation Satellite-to-satellite Tracking Spherical Harmonics Geophysics Procedures Potential Theory Fourier Series Geoids Celestial Mechanics Errors Simulation Computation Geopotential 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 |
