Data Providers: Sensor: Pattern Angle Extremals Intersection

Provides information about the points on the sensor pattern where the dihedral angle reaches its extremal values. This angle called the extremal angle is measured between two planes passing through the origin of the sensor. One of the planes - the reference for this angle - is perpendicular to the ground velocity vector and to the surface normal. The other plane is rotated away from the reference plane through the extremal angle about the direction of the ground velocity vector.

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.
Extremal Angle	AngleUnit	Real Number	Angle between the reference plane and the plane that passes through the extremal points of the sensor pattern. The angle is measured about the direction of the ground velocity vector.
Line Number	Unitless	Integer	Unique line identifier for each extremal point so that the points computed at various times can be grouped together correctly into extremal lines.
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.

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.

Extremal Angle

AngleUnit

Real Number

Angle between the reference plane and the plane that passes through the extremal points of the sensor pattern. The angle is measured about the direction of the ground velocity vector.

Line Number

Unitless

Integer

Unique line identifier for each extremal point so that the points computed at various times can be grouped together correctly into extremal lines.

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.