An Alternative Method of Computing Altitude Adjustment Corrected Geomagnetic Coordinates as Applied to IGRF Epoch 2005

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.

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Document Details

Document Type
Technical Report
Publication Date
Jul 20, 2007
Accession Number
ADA482074

Entities

People

  • Nelson A. Bonito
  • William Heres

Organizations

  • Atmospheric and Environmental Research, Inc

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Air Force Research Laboratories
  • Algorithms
  • Altitude
  • Coefficients
  • Computational Science
  • Computations
  • Consistency
  • Coordinate Systems
  • Demographic Cohorts
  • Discontinuities
  • Error Analysis
  • Grids
  • Ground Level
  • Latitude
  • Longitude
  • Magnetic Fields

Readers

  • Operations Research
  • Space Exploration and Orbital Mechanics.