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Gravity field fine structure estimation techniques for a spaceborne gravity gradiometer
- Publication Year :
- 1987
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1987.
-
Abstract
- Use of standard estimation techniques to recover geopotential fine structure from gradiometer data requires the adjustment of small subsets of parameters while constraining others to their a priori values in order to minimize the computational load. Here, gravitational anomalies are selected as a parametrization of the gravity field which permits such an approach. Techniques coupled with numerical results for a spaceborne gravity gradiometer mission simulation are described which demonstrate that if a satellite is in a polar/circular orbit at an altitude of 160 km, 1 deg mean free air gravity anomalies can be recovered to an accuracy of 0.4 mgal, where 1 mgal = 0.001 cm/sq s.
- Subjects :
- Spacecraft Instrumentation
Subjects
Details
- Language :
- English
- Database :
- NASA Technical Reports
- Publication Type :
- Report
- Accession number :
- edsnas.19880059732
- Document Type :
- Report