orbital mechanics
DESCRIPTION
Chapter 2TRANSCRIPT
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EE-483 SPRING 2015SATELLITE COMMUNICATIONS
Lecture 2Orbital Aspects
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Orbital Mechanics
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Defining “Space”3
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Is 100 miles (160 km) enough???4
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Newton’s Laws of Motion5
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Concept of Force6
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Acceleration Inwards7
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Acceleration Outwards8
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Forces on a Satellite9
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Balancing the Forces - 110
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Example Circular Orbits11
Mean Earth radius is 6378.138 km and GEO radius from the center of the Earth is 42,164.17 km
Table 2.1 Orbital Velocity, Height, and Period of Four Satellite Systems
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Orbit Limits12
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Orbital Mechanics:Kepler’s Laws
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Coordinate System 1 –Earth Main Planes
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Coordinate System 2 –Orbital Plane Coordinate System
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Developing Equations of the Orbit - 1
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Developing Equations of the Orbit - 2
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Kepler’s Three Laws18
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Review of Ellipse Geometry19
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Kepler’s First Law: Elliptical Orbits20
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Orbit Characteristics21
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Orbit Eccentricity22
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Kepler’s Second Law: Equal Area Arcs
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Kepler’s Third Law: Orbital Period24
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Solar vs. Sidereal Day - 125
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Solar vs. Sidereal Day - 226
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Solar vs. Sidereal Day - 327
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Solar vs. Sidereal Day - 428
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Numerical Example 1: The GEO Orbit
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Locating the Satellite in Orbit - 130
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Locating the Satellite in Orbit - 231
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Locating the Satellite in Orbit - 332
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Orbit Description –1(Orbital Constants)
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Orbit Description –2(Orbital Constants)
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Orbit Description - 335
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Locating Satellite with respect to Earth
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Measuring Time37
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Geocentric EquatorialCoordinates -1
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Geocentric EquatorialCoordinates -2
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Locating the Satellite -140
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Defining Parameters -141
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Defining Parameters -242
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Locating the Satellite -243
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Orbital Elements44
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Numerical Example 2:45
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Numerical Example 3:46