Sensor: Pattern Intersection

Points of the pattern that represent intersection of boundary of the sensor field-of-view with the ground surface. Points are computed in the sensor's central body fixed coordinate system. Additionally, on a Sensor's 2D Graphics Projection properties page, if "Use" is enabled under Extension Distances, points on set altitude projection levels are reported; if Show Intersections is set to Terrain, non-zero altitude values are reported for the pattern intersection and if set to Central Body, the altitude is always 0.

Type: Fixed data given specified evaluation intervals and step sizes.

Availability: Reports | Graphs | Dynamic Displays | Strip Charts

Name Dimension Type Description
Latitude LatitudeUnit Real Number The detic latitude (i.e., angle between the detic subpoint's surface normal vector and the XY plane.)
Longitude LongitudeUnit Real Number The detic longitude (i.e., angle from the X-axis locating the projection of the detic subpoint's surface normal vector onto the XY plane.) Longitude increases in the direction found using the right-hand rule about the Z-axis.
Altitude DistanceUnit Real Number The altitude value (i.e., magnitude of the relative position vector between the object and its detic subpoint).
CBF X DistanceUnit Real Number The X component of the position vector of the intersection point, expressed in the sensor's central body fixed system.
CBF Y DistanceUnit Real Number The Y component of the position vector of the intersection point, expressed in the sensor's central body fixed system.
CBF Z DistanceUnit Real Number The Z component of the position vector of the intersection point, expressed in the sensor's central body fixed system.
Range DistanceUnit Real Number The range (i.e., distance between the primary and secondary object) at the given time.
Distance AlongGroundTrack DistanceUnit Real Number A measure of distance to the intersection point along the ground track direction. Points forward of the sensor's detic subpoint are considered to have positive distances while points behind the detic subpoint will have negative distances. The distance is computed from the detic subpoint to the projection of the intersection point to a plane through the detic subpoint aligned with the ground track at that point.
Distance PerpToGroundTrack DistanceUnit Real Number A measure of distance to the intersection point perpendicular to the ground track direction. Points left of the sensor's detic subpoint are considered to have positive distances while points right of the detic subpoint will have negative distances. The distance is computed from the detic subpoint to the projection of the intersection point to a plane through the detic subpoint perpendicular to the ground track at that point.
UTM Zone Unitless Text The UTM Zone character indicator for the detic subpoint. Available only when the central body is Earth.
UTM Easting DistanceUnit Real Number The easting value within the UTM zone for the detic subpoint. Available only when the central body is Earth.
UTM Northing DistanceUnit Real Number The northing value within the UTM zone for the detic subpoint. Available only when the central body is Earth.
MGRS Cell Unitless Text The MGRS (Military Grid Reference System) code for the cell area containing the detic subpoint. Available only when the central body is Earth.

STK Programming Interface 11.0.1