| definition |
- Belongs to the Local Tangent Plane (LTP) class of coordinate systems: Cartesian, XY plane is tangential to Earth surface at the observation site and Z is normal to the plane. NED: X: points to the geomagnetic North pole. Z: points down to the Earth center, Y: makes the right-hand system, i.e., points to geomagnetic East in the tangential plane.
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