Localized Density/Drag Prediction for Improved Onboard Orbit Propagation

Abstract

The objectives of localized density modeling is presented and compared to existing global models currently in use. Localized models are primarily concerned with the density profiles observed by a specific spacecraft in a slow varying orbit regime. The CHAMP density and derived temperature data are presented and discussed as relating to localized modeling and truth values. Temperature perturbations due to geomagnetic storms are discussed and the basis of a new model that applies local information is discussed. Output based models are developed based on the autoregressive filters, that use previous density measurements to make predictions of future density values. Future work of combining simplified local density models with perturbation corrections is also discussed.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2009
Accession Number
ADA531881

Entities

People

  • Chin Lin
  • Frank R. Chavez
  • James Luck
  • Nathan B. Stastny
  • Robert L. Bettinger
  • T. A. Lovell

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Air Force Research Laboratories
  • Algorithms
  • Artificial Satellites
  • Atmospheric Temperature
  • Coefficients
  • Computational Complexity
  • Magnetic Storms
  • Measurement
  • Military Research
  • Orbits
  • Perturbations
  • Satellite Orbits
  • Signal Processing
  • Spacecraft
  • Vehicles

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Space
  • Space - Orbital Debris