Development of Finite Element Models for the Earth's Gravity Field. Phase I. Macro Gravity Model for Satellite Orbit Integration.

Abstract

As alternatives to lengthy globally valid series representations of the geopotential, piecewise modeling for the gravity field is investigated. A degree 23 spherical harmonic representation is replaced by 1500 local gravity functions within the spherical shell from 1 to 1.2 earth radii. Worst case acceleration errors enter in the 7th significant digit, computational speed is improved by an order of magnitude. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1977
Accession Number
ADA038463

Entities

People

  • John L. Junkins

Organizations

  • University of Virginia

Tags

Communities of Interest

  • Cyber
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Applied Mathematics
  • Business Administration
  • Chebyshev Polynomials
  • Computer Programming
  • Computer Programs
  • Computer Science
  • Computers
  • Engineering
  • Engineers
  • Grids
  • Materials Science
  • Polynomials
  • Satellite Orbits
  • Statistical Analysis
  • Weighting Functions

Readers

  • Atmospheric Science/Meteorology
  • Calculus or Mathematical Analysis
  • Computational Modeling and Simulation

Technology Areas

  • Space
  • Space - Orbital Debris