Results 151 to 160 of about 598 (190)

State-of-the-Art Airborne Gravimetry

1995
The measurement of the Earth’s gravity from aircraft has been an ongoing subject of research for over 30 years. Over the past decade, advances in technology, especially the ability to precisely position the aircraft via Kinematic GPS, have made it possible to improve the accuracy, reliability and repeatability of airborne measurements.
John M. Brozena, Mary F. Peters
openaire   +1 more source

COMPARISON OF ROBUST ALGORITHMS FOR AIRBORNE GRAVIMETRY

IFAC Proceedings Volumes, 2006
Abstract The problem of a gravity anomaly (GA) estimation aboard an aircraft solved by using the data from a gravimeter and phase measurements of altitude from the differential satellite navigation system is discussed. The problem is considered from the viewpoints of different robust estimation algorithms: an H ∞ estimation algorithm, a mixed H ...
V.I. Kulakova,, A.V. Nebylov, O.A. Stepanov   +2 more
openaire   +1 more source

Requirements for Airborne Vector Gravimetry

1992
The objective of airborne vector gravimetry is the determination of the full gravity disturbance vector along the aircraft trajectory. The paper briefly outlines the concept of this method using a combination of inertial and GPS-satellite data. The accuracy requirements for users in geodesy and solid earth geophysics, oceanography and exploration ...
K. P. Schwarz, O. Colombo, G. Hein, E. T. Knickmeyer   +3 more
openaire   +1 more source

Eotvos corrections for airborne gravimetry

Journal of Geophysical Research, 1968
Equations for the Eotvos correction are derived in terms of parameters for the earth's reference ellipsoid and aircraft altitude to the degree of accuracy necessary to accommodate current jet transport speeds. Distinction is made in the equations between ground speed and aircraft velocity.
openaire   +1 more source

Airborne gravimetry and the Global Positioning System

IEEE Symposium on Position Location and Navigation. A Decade of Excellence in the Navigation Sciences, 2002
The capabilities of using precise range and range rate measurements to satellites of the Global Positioning System (GPS) for the determination of the platform position and its time derivatives are explored. The accuracy requirements for airborne gravimetry are reviewed, and different schemes for correcting the gravimeter measurements are presented.
A. Kleusberg, D. Peyton, D. Wells
openaire   +1 more source

VERTICAL ATTENUATION OF ANOMALIES IN AIRBORNE GRAVIMETRY

Geophysics, 1971
Abstract Analysis of components of the gravity anomaly field from basic one, two, and three-dimensional masses demonstrates that all components of the same derivative order attenuate with flight elevation at the same rate for a given type of anomaly. Different types of anomalies attenuate with significantly different rates. The signal
openaire   +1 more source

Flightmechanical Aspects of Airborne Gravimetry

1993
This paper describes some flightmechanical aspects for the use of different types of aircraft as a platform for airborne gravimetry. As atmospheric turbulence has the most disturbing influence on aircraft motion the characteristical turbulence and aircraft parameters are derived and their influence is discussed.
openaire   +1 more source

Topograhic Corrections For Gradients In Airborne Gravimetry

Geophysics, 1976
Abstract Progress in airborne gradiometer instrumentation has advanced to the point that procedures for determining corrections for the variable effects of topography merit consideration. An approximate practical method, based on real–time recording of flight elevation and variable terrain clearance as a function of position along the
openaire   +1 more source

Airborne Gravimetry from a Light Aircraft

1992
Over the past decade, as airborne gravity data acquisition and reduction has become increasingly refined, its usage by academic, industrial and government researchers has expanded. Recent data collected jrom a Cessna 404 over water and a ski-equipped Twin Otter over a grounded ice sheet, have demonstrated that airborne gravity can recover anomalies ...
R. E. Bell, B. J. Coakley, D. D. Blankenship, S. M. Hodge, J. M. Brozena   +4 more
openaire   +1 more source

Terrain Corrections for Airborne Gravimetry and Gradiometry

EGM 2010 International Workshop, 2010
Although the theory involved is well-understood, practical real-world computation of terrain corrections for airborne gravimetry and gradiometry (AGG) surveys poses challenges in several areas, which affect not only the processing of the data, but also the survey operation itself.
openaire   +1 more source