Download - What are ground tracks? COE Determination a e i ? ? ? ? ? ? COE Determination.

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Page 1: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.
Page 2: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.
Page 3: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

What are ground tracks?

Page 4: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

What are ground tracks?

Page 5: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Page 6: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

aei

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COE Determination

Page 7: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

Non-rotating Earth

Page 8: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

Rotating Earth

Page 9: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Semimajor axis

Δ longitude

ΔN

P =ΔN

15º / hr

3a2P

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COE Determination

?

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COE Determination

Eccentricity

Circle

Page 12: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Page 13: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Line Symmetry

Ellipse

Page 14: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Line Symmetry

Ellipse

Page 15: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Line Symmetry

Ellipse

Page 16: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Line Symmetry

Ellipse

Page 17: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Line Symmetry

Ellipse

Page 18: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Line Symmetry

Ellipse

Page 19: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Line Symmetry

Ellipse

Page 20: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Page 21: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Hinge Symmetry

Ellipse

Page 22: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Hinge Symmetry

Eccentricity

Ellipse

Page 23: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Hinge Symmetry

Eccentricity

Ellipse

Page 24: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Hinge Symmetry

Eccentricity

Ellipse

Page 25: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Hinge Symmetry

Eccentricity

Ellipse

Page 26: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Hinge Symmetry

Ellipse

Page 27: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Page 28: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Line & Hinge

Circle

Page 29: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Neither

Ellipse

Page 30: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

COE Determination

Eccentricity

Page 31: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

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COE Determination

~

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COE Determination

Inclination

i = highest latitude

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COE Determination

Inclination

i = 180º - highest latitude

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COE Determination

Inclination

i = highest latitude

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COE Determination

Inclination

i = 180º - highest latitude

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COE Determination

~

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COE Determination

~

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COE Determination

Argument of Perigee

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COE Determination

360º per orbit90º

180º

270º

360º

Ascending Node

Argument of Perigee

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Perigee = 180

Perigee = 270

Perigee = 90

Perigee = 0

Hinge Symmetric Line Symmetric

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COE Determination

Argument of Perigee

ω = 180º

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COE Determination

Argument of Perigee

ω = 90º

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COE Determination

Argument of Perigee

ω = 0º

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COE Determination

Argument of Perigee

ω = 270º

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COE Determination

Argument of Perigee

Hinge Symmetry

ω = 0º or 180º

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COE Determination

Argument of Perigee

Line Symmetry

ω = 90º or 270º

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aei

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COE Determination

~

~

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COE Determination

True Anomaly

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COE Determination

True Anomaly

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COE Determination

True Anomaly

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Orbit Examples

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Molniya

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Geostationary

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Geosynchronous

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Geosynchronous

e = 0.8 = 180

e = 0.8 = 0

e = 0.0

Page 56: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.

Geosynchronous

e = 0i = 0

e = 0.4 = 180

e = 0.6 = 90

Page 57: What are ground tracks? COE Determination a e i   ? ? ? ? ? ? COE Determination.