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Convert Earth-centered inertial (ECI) coordinates to azimuth coordinates

**Library:**Aerospace Blockset / Utilities / Axes Transformations

The ECI Position to AER block converts Earth-centered inertial (ECI) position coordinates to azimuth, elevation, and slant-range coordinates (AER), based on the geodetic position (latitude, longitude, and altitude).

Azimuth (A) — Angle measured clockwise from true north. It ranges from 0 to 360 degrees.

Elevation (E) — Angle between a plane perpendicular to the ellipsoid and the line that goes from the local reference to the object position. It ranges from –90 to 90 degrees.

Slant range (R) — Straight line distance between the local reference and the object.