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    Deriving Atmospheric Density Estimates Using Satellite Precision Orbit Ephemerides

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    Hiatt_ku_0099M_10289_DATA_1.pdf (2.115Mb)
    Issue Date
    2009-01-01
    Author
    Hiatt, Andrew Timothy
    Publisher
    University of Kansas
    Format
    pages
    Type
    Thesis
    Degree Level
    M.S.
    Discipline
    Aerospace Engineering
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
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    Abstract
    Current atmospheric models are incapable of properly modeling all of the density variations in the Earth’s upper atmosphere. Precision orbit ephemerides (POE) are utilized in an orbit determination process to generate improved atmospheric density estimates. Based on their correlation to accelerometer density, the POE density estimates were demonstrated to be an improvement over existing atmospheric models and somewhat better than the improved density estimates from the High Accuracy Satellite Drag Model regardless of solar and geomagnetic activity levels. The POE density estimates were obtained with the desired accuracy for a ±10% variation in the ballistic coefficient used to initialize the process. Fit span length showed little influence on the POE density estimate accuracy. POE density estimate overlap regions demonstrated a method of determining the consistency of the solutions. Gravity Recovery and Climate Experiment POE density estimates showed consistent results with the Challenging Mini−Satellite Payload POE density estimates.
    URI
    http://hdl.handle.net/1808/4553
    Collections
    • Engineering Dissertations and Theses [1055]
    • Theses [3901]

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    785-864-8983
    KU Libraries
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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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