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Advanced Geostationary Orbital Mechanics

DURATION: THREE DAYS
COURSE NO.:2022

COURSE SUMMARY

This unique course offers a detailed look at the principles and physics behind geostationary orbits, perturbations,
stationkeeping control requirements and many related topics. Lectures are focused on the reasons behind today’s
satellite operations and control requirements. Attendees receive a fundamental grounding in orbital mechanics,
perturbations, satellite maneuvering, orbit determination, constellation management, end-of-life maneuvers,
co-location dynamics and space debris issues.

COURSE MATERIALS:

Each attendee will receive a CD copy of the PowerPoint presentation and a printed set of course materials.

WHO SHOULD ATTEND:

This course is specially designed for commercial and government geostationary satellite operators and designers.

WHAT YOU WILL LEARN:

History and description of the geostationary orbits; Fundamentals of orbital mechanics; Establishing a geostationary orbit;
Natural perturbations to geostationary orbits; Useful coordinate systems and transformations; Orbit determination methods;
End-of-life maneuvers; Co-location and clustering techniques; Orbital debris issues that affect geostationary satellites

COURSE OUTLINE:

    1.0 Introduction to Geostationary Orbits

    Key geostationary satellite and orbit references; Origin and definition of the geostationary orbit; Establishing
    the geostationary orbit

    2.0 Inertia and Moving Reference Frames

    Earth-centered inertial (ECI) frame; Earth-centered Earth-fixed (ECEF) frame; Orbit-centered coordinates;
    Solar system geometry and reference frames

    3.0 Fundamental Orbital Mechanics

    Derivation of Keplerian elements; Adapted Keplerian elements; Two-Line and Cartesian elements

    4.0 Orbit Determination Methods

    Data collection methods; Least squares method; Kalman filtering

    5.0 Geostationary Orbit Perturbations

    Geometric approach to perturbation analysis; Gravity models and oblateness effects;
    Natural perturbations on GEO orbits; Stationkeeping requirements and strategies

    6.0 Space Debris Issues

    Understanding space debris; Geostationary debris issues; The Graveyard Orbit

    7.0 Orbital Maneuvers

    Single and multiple impulse adjustments;Plane rotation and combined maneuvers;  End-of-life maneuvers and
    strategies

    8.0 Co-location and clustering techniques

    General equation of relative motion; Relative motion of two close satellites; Formation flying guidance and
    control techniques

    9.0 Special Topics for Geostationary Satellites

    Effect of Moon's Shadow on Geostationary Satellites; Using a lunar swing for geostationary injections; Estimating
    end-of-life propellant

    10.0 Course Summary and Lessons Learned

     

INSTRUCTOR: MARSHALL H. KAPLAN

Marshall H. Kaplan, Ph.D., has been teaching courses on space technology since 1968. His career spans 35+ years of
combined professional experience in the aerospace industry and in academia. Dr. Kaplan enjoys an international
reputation as a lecturer on several subjects in astronautical engineering and is an expert in spacecraft and launch
vehicle design, orbital mechanics and satellite dynamics and control. Dr. Kaplan was instrumental in the design and
development of three-axis stabilized attitude control systems and stationkeeping techniques for geostationary
satellites. He is the author of the widely acclaimed text, "Modern Spacecraft Dynamics and Control." Dr. Kaplan has
authored three books and more than 100 papers and reports on various aspects of astronautics. He received advanced
degrees in Aeronautics and Astronautics from M.I.T. and Stanford University, and he is a Fellow of the American
Institute of Aeronautics and Astronautics and the American Astronautical Society.

L A U N C H S P A C E

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