A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Gravity gradient modeling using gravity and DEM
Abstract A model of the gravity gradient tensor at aircraft altitude is developed from the combination of ground gravity anomaly data and a digital elevation model. The gravity data are processed according to various operational solutions to the boundary-value problem (numerical integration of Stokes’ integral, radial-basis splines, and least-squares collocation). The terrain elevation data are used to reduce free-air anomalies to the geoid and to compute a corresponding indirect effect on the gradients at altitude. We compare the various modeled gradients to airborne gradiometric data and find differences of the order of 10–20 E (SD) for all gradient tensor elements. Our analysis of these differences leads to a conclusion that their source may be primarily measurement error in these particular gradient data. We have thus demonstrated the procedures and the utility of combining ground gravity and elevation data to validate airborne gradiometer systems.
Gravity gradient modeling using gravity and DEM
Abstract A model of the gravity gradient tensor at aircraft altitude is developed from the combination of ground gravity anomaly data and a digital elevation model. The gravity data are processed according to various operational solutions to the boundary-value problem (numerical integration of Stokes’ integral, radial-basis splines, and least-squares collocation). The terrain elevation data are used to reduce free-air anomalies to the geoid and to compute a corresponding indirect effect on the gradients at altitude. We compare the various modeled gradients to airborne gradiometric data and find differences of the order of 10–20 E (SD) for all gradient tensor elements. Our analysis of these differences leads to a conclusion that their source may be primarily measurement error in these particular gradient data. We have thus demonstrated the procedures and the utility of combining ground gravity and elevation data to validate airborne gradiometer systems.
Gravity gradient modeling using gravity and DEM
Zhu, Lizhi (author) / Jekeli, Christopher (author)
Journal of Geodesy ; 83
2008
Article (Journal)
English
BKL:
38.73
Geodäsie
Gravity gradient modeling using gravity and DEM
| Online Contents | 2008
GOCE gravity gradient data for lithospheric modeling
Online Contents | 2015
Modeling of vertical gravity gradient by normal gravity field and digital terrain models
| Online Contents | 2022
| Engineering Index Backfile | 1964
Efficient gravity field recovery from GOCE gravity gradient observations
| Online Contents | 2000