Satellite: Position Covariance Projection Choose Plane

Projection of the equal probability density ellipsoid defined by the position covariance matrix onto the specified plane. Any plane defined in the Vector Geometry Tool is available for use, including user defined planes. The data requires position covariance to be defined for the object.

Type: Time-varying data

Availability: Reports | Graphs | Dynamic Displays | Strip Charts

Name Dimension Type Description
Time DateFormat Real Number Time.
Sigma Axis-1 DistanceUnit Real Number Square root of the first diagonal component of the projected covariance matrix.
Sigma Axis-2 DistanceUnit Real Number Square root of the second diagonal component of the projected covariance matrix.
Correlation 12 Unitless Real Number Correlation coefficient of the projected covariance matrix.
1/(Inverted Sigma Axis-1) DistanceUnit Real Number Square root of the inverse of the first diagonal element of the inverse of the projected covariance matrix.
1/(Inverted Sigma Axis-2) DistanceUnit Real Number Square root of the inverse of the second diagonal element of the inverse of the projected covariance matrix.
Major Sigma Dir Angle AngleUnit Real Number Angle between the major axis of the equal probability density ellipse and the first axis of the projection plane.
Major Sigma DistanceUnit Real Number Square root of the maximum eigenvalue of the projected covariance matrix.
Minor Sigma DistanceUnit Real Number Square root of the minimum eigenvalue of the projected covariance matrix.
Area Area Real Number Model area.
CEP DistanceUnit Real Number "Circular error probable" - statistically equivalent circular representation for the elliptical equal probability density contour defined by the projected covariance matrix.

STK Programming Interface 11.0.1