NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Binning of satellite magnetic anomaliesCrustal magnetic anomaly signals over satellite orbits were simulated to investigate numerical averaging as an anomaly estimator. Averaging as an anomaly estimator involves significant problems concerning spatial and amplitude smoothing of the satellite magnetic observations. The results of simulations suggest that the error of numerical averaging constitutes a small and relatively minor component of the total error-budget of higher orbital anomaly estimates, whereas for lower orbital estimates numerical averaging error increases substantially. As an alternative to numerical averaging, least-squares collocation was investigated and observed to produce substantially more accurate anomaly estimates, particularly as the orbital elevation of prediction was decreased towards the crustal sources. In contrast to averaging, collocation is a significantly more resource-intensive procedure to apply because of the practical, but surmountable problems related to establishing and inverting the covariance matrix for accurate anomaly prediction. However, collocation may be much more effectively used to exploit the anomaly details contained in the lower orbital satellite magnetic data for geologic analysis.
Document ID
19850023277
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Goyal, H. K.
(Ohio State Univ. Columbus, OH, United States)
Vonfrese, R. R. B.
(Ohio State Univ. Columbus, OH, United States)
Hinze, W. J.
(Purdue Univ. Lafayette, Ind., United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: Purdue Univ. Improving the Geol. Interpretation of Magnetic and Gravity Satellite Anomalies
Subject Category
Earth Resources And Remote Sensing
Accession Number
85N31590
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available