The Azimuth, Elevation, and Range (AER) report for access is based on a default local coordinate system for every type of STK object. If the AER Report is based on a sensor, then the report uses the coordinate frame of the parent object.
1) For
facilities and
targets, the local coordinate system is LH.
• Azimuth is referenced to X, positive toward Y (clockwise from above).
• Elevation is referenced to the X-Y plane, positive along negative Z.
2) For aircraft, ships, and ground vehicles, the local coordinate system is VVLH CBF (Central Body Fixed).
• Azimuth is referenced to X, positive toward Y (clockwise from above).
• Elevation is referenced to the X-Y plane, positive along negative Z.
3) For satellites and missiles, the local coordinate system is VVLH CBI (Central Body Inertial).
• Azimuth is referenced to X, positive toward Y.
• Elevation is referenced to X-Y plane, positive along negative Z.
Here are the definitions for the LH and VVLH frames.
LH (Local Horizontal)
X axis = constrained toward local north
Y axis = local east
Z axis = aligned with local geodetic nadir
VVLH (Vehicle Velocity, Local Horizontal)
X axis = constrained toward velocity vector
Y axis = perpendicular to X and Z
Z axis = aligned with geocentric nadir
