Package org.orekit.models.earth

Class GeoMagneticModelParser

java.lang.Object

org.orekit.models.earth.GeoMagneticModelParser

public class GeoMagneticModelParser
extends Object

Loads geomagnetic field models from a given input stream. A stream may contain multiple models, the loader reads all available models in consecutive order.

The format of the expected model file is either:

• combined format as used by the geomag software, available from the IGRF model site; supports multiple epochs per file
• original format as used by the WMM model site.

Combined Format

     {model name} {epoch} {nMax} {nMaxSec} {nMax3} {validity start} {validity end} {minAlt} {maxAlt} {model name} {line number}
 {n} {m} {gnm} {hnm} {dgnm} {dhnm} {model name} {line number}
 

Example:

    WMM2010  2010.00 12 12  0 2010.00 2015.00   -1.0  600.0          WMM2010   0
 1  0  -29496.6       0.0      11.6       0.0                        WMM2010   1
 1  1   -1586.3    4944.4      16.5     -25.9                        WMM2010   2
 

Original WMM Format

    {epoch} {model name} {validity start}
 {n} {m} {gnm} {hnm} {dgnm} {dhnm}
 

Example:

    2015.0            WMM-2015        12/15/2014
  1  0  -29438.5       0.0       10.7        0.0
  1  1   -1501.1    4796.2       17.9      -26.8
 

Since:

13.0

Author:

Thomas Neidhart, Luc Maisonobe

Constructor Summary

Constructors

Constructor	Description
GeoMagneticModelParser()	Empty constructor.

Method Summary

Modifier and Type	Method	Description
List<GeoMagneticField>	parse(DataSource dataSource)	Parse a model.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GeoMagneticModelParser

public GeoMagneticModelParser()

Empty constructor.

Method Detail

parse

public List<GeoMagneticField> parse(DataSource dataSource)
                             throws IOException

Parse a model.

Parameters:

dataSource - source data

Returns:

parsed fields

Throws:

IOException - if an I/O error occurs