SRF Example

• A planetary body is represented by an ORM composed of:

  • A mass-center,
  • A rotational axis and equatorial plane,
  • A defined prime meridian, and
  • An ellipsoid of revolution ORS

• A right-handed 3D orthonormal coordinate system with the following relationships to the ORS is defined:

  • The origin of the coordinate system is at the center of the ellipsoid of revolution
  • The Z-axis of the coordinate system is aligned with the minor axis of the ellipsoid of revolution origin, with the positiveZ-axis pointing towards north based on the spin axis of the planet
  • The plane of the X-Y axis of the coordinate system is the plane swept out by the semi-major axis of the ellipse, which coincides with the equator of the planet
  • The X-axis of the coordinate system passes through the defined prime meridian

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