Gravity Anomaly Recovery from Satellite Altimetry Data Using Least Squares Collocation Techniques PDF Download
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Author: Richard H. Rapp
Publisher:
ISBN:
Category :
Languages : en
Pages : 25
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Book Description
The prediction of mean gravity anomalies from other anomalies and satellite altimeter data is described using the technique of least squares collocation. The equations derived are then used in simulation studies, using altimeter data alone, to estimate the accuracy to which mean gravity anomalies can be determined with respect to an ellipsoidal reference field and a degree 12 reference field.
Author: Richard H. Rapp
Publisher:
ISBN:
Category :
Languages : en
Pages : 25
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Book Description
The prediction of mean gravity anomalies from other anomalies and satellite altimeter data is described using the technique of least squares collocation. The equations derived are then used in simulation studies, using altimeter data alone, to estimate the accuracy to which mean gravity anomalies can be determined with respect to an ellipsoidal reference field and a degree 12 reference field.
Author: Richard H. Rapp
Publisher:
ISBN:
Category :
Languages : en
Pages : 25
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Book Description
Author: Reinhard Rummel
Publisher:
ISBN:
Category : Gravity anomalies
Languages : en
Pages : 61
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Book Description
Range rate data between two satellites can be used to determine acceleration along the connecting line between two satellites by numerically differentiating an analytic representation of this data. Using a reference potential field this acceleration can be interpreted to be a derivative of the disturbing potential along the line of the satellites. Using geometric techniques, the radial component of the disturbing potential can be estimated. This component can then be incorporated in the determination of mean gravity anomalies at the surface of the earth using least squares collocation and theorectical covariance functions. This paper discusses the theoretical basis of the above procedures and describes two simulation studies performed.
Author: Robert P. Bessette
Publisher:
ISBN:
Category : Altitudes
Languages : en
Pages : 28
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Book Description
We previously described (14,14) spherical-harmonic global adjustments of satellite altimetry using the AFGL short-arc technique supplemented with point masses to allow incorporation of short-wavelength geoidal detail. Recently, we have also investigated another technique to enhance short-wavelength detail: least squares collocation with noise. Both methods provide a means to determine a high resolution gravity field on a local, regional or global scale. Statistical comparisons of these two methods have been made in selected areas and the results tabulated.
Author: D. P. Hajela
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722232337
Category :
Languages : en
Pages : 86
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Book Description
Satellite-based altimetric data taken by GEOS-3 and SEASAT over the Black Sea and Caspian Sea are analyzed and a least squares collocation technique is used to predict the geoid undulation on a .25-degree by .25-degree grid and to transform these geoid undulations to free air gravity anomalies. This project entailed processing satellite altimeter data over inland seas for recovery of area mean gravity information. Gravity information in this area of the world is not readily available, so the possibility of obtaining it from the processing of altimeter observations is attractive. The principal objective was to complete and extend analyses done in a previous study, verify those results, and document the results and techniques. A secondary objective was to improve the algorithms and results, if possible. The approach used involved editing geoid height data to remove overland data; evaluating geoid height differences at crossover points; removing orbit errors from geoid heights using crossover differences; gridding geoid height data at .25-degree by .25-degree intervals; and estimating the gravity anomalies from gridded geoid heights using the collocation technique. Au, A. Y. and Brown, R. D. and Welker, J. E. Goddard Space Flight Center...
Author: D. Lelgemann
Publisher:
ISBN:
Category : Curvilinear coordinates
Languages : en
Pages : 640
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1004
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Book Description
Author: R. H. N. Haagmans
Publisher:
ISBN:
Category :
Languages : en
Pages : 101
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Book Description
Author: Cheinway Hwang
Publisher: Springer Science & Business Media
ISBN: 3642188613
Category : Science
Languages : en
Pages : 446
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Book Description
This volume covers a broad range of altimetry applications, including marine gravity and geoid, sea level change, ocean tide modeling, ocean circulations, marine plate tectonics, mesoscale eddies and bathymetry predictions. Virtually all disciplines of earth sciences are touched upon through the technique of satellite altimetry. Readers will find useful data processing techniques and novel applications of satellite altimetry, which otherwise are scattered in journals and special books.
