BS ISO 16695:2014
Current
The latest, up-to-date edition.
Space environment (natural and artificial). Geomagnetic reference models
Hardcopy , PDF
English
28-02-2014
Foreword
Introduction
1 Scope
2 Reference frames
3 Specification of the geomagnetic field vector
4 Specification of the geomagnetic reference model
5 Examples of the use of geomagnetic reference models
Annex A (informative) - Available geomagnetic
reference models
Bibliography
Specifies reference models representing the geomagnetic field.
Committee |
ACE/68
|
DevelopmentNote |
Supersedes 12/30235924 DC. (02/2014)
|
DocumentType |
Standard
|
Pages |
30
|
PublisherName |
British Standards Institution
|
Status |
Current
|
Supersedes |
This International Standard defines reference models representing the geomagnetic field. It closely mirrors and clarifies specifications which have been in use for many decades.
The approach is to represent the corresponding scalar magnetic potential by a spherical harmonic expansion having specified numerical coefficients, called Gauss coefficients. This International Standard covers models in which, at any one time, changes of the magnetic field are modelled by a linear time-dependence of each Gauss coefficient. A model might consist of a succession of sub-models, in each of which the coefficients change linearly with time. For such a step-wise linear model, the coefficients are continuous in time. This International Standard provides the formulae and a step-by-step computational procedure to evaluate a geomagnetic reference model for any desired location and date.
This International Standard does not specify the interpretation of the geophysical content of a geomagnetic reference model. It is left to the producer of a model to specify which internal and external magnetic sources are included in (or excluded from) their model.
Standards | Relationship |
ISO 16695:2014 | Identical |
ISO 19111:2007 | Geographic information Spatial referencing by coordinates |
ISO 22009:2009 | Space systems — Space environment (natural and artificial) — Model of the earth's magnetospheric magnetic field |
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