Use to define the graphical display of contours in the 3D Graphics windows.
Elevation Contours
Displays elevation angle contour graphics related to a vehicle in the 3D Graphics windows. The contours that display are defined on the 2D Graphics Contours page for the selected vehicle.
Show. Displays elevation angle contours.
Show Contour Cones. Displays elevation angle contours as a filled cone in space. If not selected, only the cone's projection is displayed on the surface of the central body.
% Translucency. Use the slide control to set the translucency of the contour cones. Translucency can be adjusted from 0 to 100 percent, where 100 percent is completely invisible.
Fill. Displays elevation angle contours as a filled polygon on the surface of the central body.
% Translucency. Use the slide control to set the translucency. Translucency can be adjusted from 0 to 100 percent, where 100 percent is completely invisible.
South Atlantic Anomaly Contour
For satellites only. Use to control the display of the South Atlantic Anomaly (SAA) in the 3D Graphics window using elevation values defined in the 2D Elevation Contours page of the vehicle's 2D Graphics properties.
The graphics for the SAA for a vehicle may differ slightly from the SAA reported data in STK due to interpolation methods used when rendering the SAA contour.
Show. Displays contour graphics for the South Atlantic Anomaly.
% Translucency. Use the slide control to set the translucency of the contour levels. Translucency can be adjusted from 0 to 100 percent, where 100 percent is completely invisible.
Covariance Pointing Contour
Use to define the display of directional uncertainty contours from the current object to the selected To Object. The contours created take into account positional uncertainties of the two objects. These uncertainties are assumed uncorrelated, so that the combined uncertainty is represented by the sum of the positional covariances of the two objects. The resulting covariance defines a 3D ellipsoid, which is viewed from the current object location to create a directional uncertainty contour.
Attributes
Basic
Indicates you are setting the basic graphics properties instead of the intervals graphics properties.
Show. If selected, you can set the following attributes.
Color. The color of the contour lines.
Line Width. The width of the contour lines.
% Translucency. Use the slide control to set the translucency of the pointing contours. Translucency can be adjusted from 0 to 100 percent, where 100 percent is completely invisible.
Intervals
Indicates you are setting the intervals graphics properties instead of the basic graphics properties.
Start. The time at which the interval begins and the graphics defined here display in the 3D Graphics window. STK uses the Default Attributes values if there is an interval of time not covered by the intervals you specified.
Stop. The time at which the interval ends.
Show. If selected, the object is displayed during the selected time using the graphics properties set here. If not selected, the object does not display in the 3D Graphics window during the selected interval.
Color. The color of the contour lines.
Width. The width of the contour lines.
% Translucency. The translucency of the pointing contours. Translucency can be 0 to 100 percent, where 100 percent is completely invisible.
Add button. Click to add a covariance interval to the table.
Load button. Click to use interval data from an external file. Interval times in the external file are used as the display times for the object.
Import button. Click to import STK Analysis Workbench Time Tool interval component data. Interval times in the interval component are then used as the display times for the object.
Remove button. Click to remove the selected time period from the Intervals table.
Remove All button. Click to remove all intervals from the Intervals table.
To Object
Lists available objects that can be used to characterize directional uncertainty contours from the current object to the selected To Object.
Sigma Scale
Probability. Size the contour indirectly by specifying the probability encompassed by the contour as a percent. A probability of 95% corresponds to a scale of 2.448.
Scale. Size the contour directly by specifying the scale.
Unlike 3D covariance ellipsoids, covariance pointing contours use the sigma scale relationship between the probability and the covariance scaling based on two and NOT three dimensions, since only two variables are used to parameterize the direction.
Size
Scale to Attitude Sphere. Scales the distance at which the contour is drawn to the radius of the attitude sphere.
Scale. Scales the distance at which the contour is drawn.
Show Cone. If selected, the cone is created by connecting to the center of the current object with the contour. The size of this cone (i.e. the radius of the sphere where the contour is shown) can be changed and optionally set to the size of the attitude sphere using the size properties.