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In relation to the satellite navigation system NAVSTAR GPS, the term inclination denotes the angle between the:
  • A
    orbital plane and the earths axis.
  • B
    horizontal plane at the location of the receiver and the direct line to a satellite.
  • C
    horizontal plane at the location of the receiver and the orbital plane of a satellite.
  • D
    orbital plane and the equatorial plane.
Refer to figure.
Inclination is the angle of the orbit in relation to Earth's equator. A satellite that orbits directly above the equator has zero inclination. If a satellite orbits from the north pole (geographic, not magnetic) to the south pole, its inclination is 90 degrees.

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