Author: Publisher:
ISBN:
Category : Satellites
Languages : en
Pages : 28
Book Description
Satellite Magnetic Field Mapping
Author: Satellite Magnetic Field Mapping
Author: James P. HeppnerPublisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
A PRELIMINARY ANALYSIS IS MADE OF DATA FROM THE Vanguard III satellite (1959 ETA). The resulting scalar field measurements are plotted against computed values obtained from three differentANALYSES: Finch and Leaton coefficients, Jensen and Whitaker coefficients from U.S.N.H.O. charts, and Jensen and Whitaker coefficients from Russian charts. The topics discussed include: The accuracy of spherical harmonic analyses of the earth's field, possible magnetic field discontinuities associated with the inner radiation belt, and magnetic storm effects. (Author).
The Magnetic Field of the Earth's Lithosphere
Author: R. A. LangelPublisher: Cambridge University Press
ISBN: 9780521473330
Category : Science
Languages : en
Pages : 444
Book Description
This 1998 book documents the collection, processing and analysis of satellite magnetic field data.
An Observational Test of Magnetospheric Magnetic Field Mapping
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
The distortion of the geomagnetic field is a key signature of the response of the magnetosphere to the solar wind input. A number of empirical models have been devised to estimate the magnetic field direction and magnitude at any point within the magnetosphere under a variety of conditions. We describe a technique whereby the field-line mapping predicted by such models is tested by matching measurements of magnetospheric plasma energy spectra obtained by Los Alamos instruments at geosynchronous orbit with spectra obtained by instruments on the polar-orbiting DMSP satellites (at an altitude of about 800 km) at times when the two satellites are in approximate magnetic conjugacy. With up to three geosynchronous satellites and as many as four DMSP satellites in operation at any given time, there are a very large number of such two-satellite conjunctions, allowing the model mappings to be tested under a wide range of local times and geomagnetic activity. Preliminary results from the application of this technique are presented for one week of data from March, 1991.
The Worldwide Network of Digital Magnetic Observations
Author: R. L. ColesContributions of Rockets and Satellites to the World Magnetic Survey
Author: James P. HeppnerPublisher:
ISBN:
Category : Satellites
Languages : en
Pages : 20
Book Description
NASA Technical Note
Author: The Worldwide Network of Digital Magnetic Observatories: Implications for Accuracy, Studies of the Earth's Deep Interior, and Satellite Mapping of the Earth's Magnetic Field
Author: Ionospheric Multi-Spacecraft Analysis Tools
Author: Malcolm Wray DunlopPublisher: Springer Nature
ISBN: 3030267326
Category : Science
Languages : en
Pages : 296
Book Description
This open access book provides a comprehensive toolbox of analysis techniques for ionospheric multi-satellite missions. The immediate need for this volume was motivated by the ongoing ESA Swarm satellite mission, but the tools that are described are general and can be used for any future ionospheric multi-satellite mission with comparable instrumentation. In addition to researching the immediate plasma environment and its coupling to other regions, such a mission aims to study the Earth’s main magnetic field and its anomalies caused by core, mantle, or crustal sources. The parameters for carrying out this kind of work are examined in these chapters. Besides currents, electric fields, and plasma convection, these parameters include ionospheric conductance, Joule heating, neutral gas densities, and neutral winds.
Contributions of Rockets and Satellites to the World Magnetic Survey
Author: James P. HeppnerPublisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
Mapping of the earth's magnetic field with satellites is of primary importance in the World Magnetic Survey. This importance stems not only from the operational capability to map vast regions in minimum time, but also from the capability to differentiate the causes of variations in the earth's field. Rocket and space probe measurements supplement satellite surveys in providing cross-ties for mapping and in finding the sources of field variations. For most of the survey objectives, highly accurate measurements are required. Thus, magnetometers based on nuclear or atomic resonance offer many advantages. Vanguard III, (1959 eta), with a proton precessional magnetometer, was an initial step toward field mapping with an absolute instrument. Optical pumping magnetometers now make possible continuous absolute measurements over the full range of earth field intensities with low power dissipation. The Orbiting Geophysical Observatory satellites will probably be the primary vehicles for future magnetic field surveys. These include satellites in highly eccentric orbits with small inclination, and satellites in polar orbits of low eccentricity. (Author).