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 Earth Sciences Geomagnetism |
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An Alternative Method of Computing Altitude Adjustment Corrected Geomagnetic Coordinates as Applied to IGRF Epoch 2005
Authors: William Heres; Nelson A Bonito; ATMOSPHERIC AND ENVIRONMENTAL RESEARCH INC LEXINGTON MA |
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Abstract: An updated set of altitude adjusted corrected geomagnetic coordinates has been calculated. The coordinates are based on the 10th generation IGRF model coefficients for Epoch 2005. The corrected geomagnetic coordinates at ground level are available as a lookup table, and a corresponding set of spherical harmonic coefficients for use in computing altitude adjusted corrected geomagnetic coordinates at various altitudes (after Baker and Wing [1998]) are also available. Both products are geared towards replacing the tables and coefficients used in Hein and Bhavnani [1996]. An alternative algorithm is introduced that assists in solving discontinuity problems found near the South Atlantic Anomaly and the dip equator when calculating geomagnetic coordinates from a geographic coordinate basis.
| Description: |
Scientific rept. no. 3, 6 Aug 2004-20 Jul 2007 |
| Pages: |
28 |
| Report Date: |
20-Jul-2007 |
| Contract Number: |
FA8718-04-C-0069 FA871804C0069 |
| Report Number: |
A470284 |
Report Unavailable |
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