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The Geopotential Research Mission - Mapping the near earth gravity and magnetic fieldsThe Geopotential Research Mission (GRM), NASA's low-level satellite system designed to measure the gravity and magnetic fields of the earth, and its objectives are described. The GRM will consist of two, Shuttle launched, satellite systems (300 km apart) that will operate simultaneously at a 160 km circular-polar orbit for six months. Current mission goals include mapping the global geoid to 10 cm, measuring gravity-field anomalies to 2 mgal with a spatial resolution of 100 km, detecting crustal magnetic anomalies of 100 km wavelength with 1 nT accuracy, measuring the vectors components to + or - 5 arc sec and 5 nT, and computing the main dipole or core field to 5 nT with a 2 nT/year secular variation detection. Resource analysis and exploration geology are additional applications considered.
Document ID
19840044976
Document Type
Conference Paper
Authors
Taylor, P. T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Keating, T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Smith, D. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Langel, R. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schnetzler, C. C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kahn, W. D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1983
Subject Category
GEOPHYSICS
Distribution Limits
Public
Copyright
Other