Sensor
Available Data Providers
| Name | Description |
|---|---|
| Active Constraints | Lists the constraints that are considered when computing access for the object. |
| All Constraints | Descriptions of all constraints available for this object and its parent object. |
| Angles | Reports angle and its time rate of change rate. Angle must be defined in the Vector Geometry Tool. |
| Available Times | The time intervals over which the object is available to participate in access computations. |
| Axes Choose Axes | Reports the orientation and angular velocity of the selected set of axes relative to a chosen reference set of axes. The selected set of axes can be selected from any axes in the Vector Geometry Tool owned by the object; the reference axes may be chosen from any axes in the Vector Geometry Tool. |
| Azimuth Elevation Mask | The obscuration mask data for the object. The data may have been derived from a body mask. Azimuth and elevation are measured in the sensor's body frame; however, the sensor may be set to use either the x-axis, y-axis, or z-axis as the reference normal direction (i.e., the primary boresight axis) to the reference plane that is used to measure these angles. |
| Body Axes Orientation | Reports the orientation and angular velocity of the Body axes of the object with respect to a selected reference set of axes.
The reference set of axes can be selected from any axes in the Vector Geometry Tool owned by the object.
Selecting the Body axes as the reference axes results in no orientation difference nor any angular velocity between the Body axes and this reference axes. |
| Body Axes Orientation:YPR 123 | Reports the orientation and angular velocity of the Body axes of the object with respect to a selected reference set of axes, where
the Yaw, Pitch, and Roll angles are defined using the YPR 123 sequence. The reference set of axes can be selected from any axes in the Vector Geometry Tool owned by the object.
Similar to Euler angles, YPR angles specify attitude using three rotations in sequence: a rotation about the reference X axis is called roll (R), a rotation about the reference Y axis is called pitch (P), and a rotation about the reference Z axis is called yaw (Y). Unlike Euler angles, the rotations are not made about axes defined by an earlier rotation: each rotation is made about the reference system's axes. As used in YPR angles, the names yaw, pitch, and roll do not refer to the angles normally used in aviation; the terms yaw, pitch, and roll in aviation refer to 321 Euler angles. Selecting the Body axes as the reference axes results in no orientation difference nor any angular velocity between the Body axes and this reference axes. |
| Body Axes Orientation:YPR 132 | Reports the orientation and angular velocity of the Body axes of the object with respect to a selected reference set of axes, where
the Yaw, Pitch, and Roll angles are defined using the YPR 132 sequence. The reference set of axes can be selected from any axes in the Vector Geometry Tool owned by the object.
Similar to Euler angles, YPR angles specify attitude using three rotations in sequence: a rotation about the reference X axis is called roll (R), a rotation about the reference Z axis is called yaw (Y), and a rotation about the reference Y axis is called pitch (P). Unlike Euler angles, the rotations are not made about axes defined by an earlier rotation: each rotation is made about the reference system's axes. As used in YPR angles, the names yaw, pitch, and roll do not refer to the angles normally used in aviation; the terms yaw, pitch, and roll in aviation refer to 321 Euler angles. Selecting the Body axes as the reference axes results in no orientation difference nor any angular velocity between the Body axes and this reference axes. |
| Body Axes Orientation:YPR 213 | Reports the orientation and angular velocity of the Body axes of the object with respect to a selected reference set of axes, where
the Yaw, Pitch, and Roll angles are defined using the YPR 213 sequence. The reference set of axes can be selected from any axes in the Vector Geometry Tool owned by the object.
Similar to Euler angles, YPR angles specify attitude using three rotations in sequence: a rotation about the reference Y axis is called pitch (P), a rotation about the reference X axis is called roll (R), and a rotation about the reference Z axis is called yaw (Y). Unlike Euler angles, the rotations are not made about axes defined by an earlier rotation: each rotation is made about the reference system's axes. As used in YPR angles, the names yaw, pitch, and roll do not refer to the angles normally used in aviation; the terms yaw, pitch, and roll in aviation refer to 321 Euler angles. Selecting the Body axes as the reference axes results in no orientation difference nor any angular velocity between the Body axes and this reference axes. |
| Body Axes Orientation:YPR 231 | Reports the orientation and angular velocity of the Body axes of the object with respect to a selected reference set of axes, where
the Yaw, Pitch, and Roll angles are defined using the YPR 231 sequence. The reference set of axes can be selected from any axes in the Vector Geometry Tool owned by the object.
Similar to Euler angles, YPR angles specify attitude using three rotations in sequence: a rotation about the reference Y axis is called pitch (P), a rotation about the reference Z axis is called yaw (Y), and a rotation about the reference X axis is called roll (R). Unlike Euler angles, the rotations are not made about axes defined by an earlier rotation: each rotation is made about the reference system's axes. As used in YPR angles, the names yaw, pitch, and roll do not refer to the angles normally used in aviation; the terms yaw, pitch, and roll in aviation refer to 321 Euler angles. Selecting the Body axes as the reference axes results in no orientation difference nor any angular velocity between the Body axes and this reference axes. |
| Body Axes Orientation:YPR 312 | Reports the orientation and angular velocity of the Body axes of the object with respect to a selected reference set of axes, where
the Yaw, Pitch, and Roll angles are defined using the YPR 312 sequence. The reference set of axes can be selected from any axes in the Vector Geometry Tool owned by the object.
Similar to Euler angles, YPR angles specify attitude using three rotations in sequence: a rotation about the reference Z axis is called yaw (Y), a rotation about the reference X axis is called roll (R), and a rotation about the reference Y axis is called pitch (P). Unlike Euler angles, the rotations are not made about axes defined by an earlier rotation: each rotation is made about the reference system's axes. As used in YPR angles, the names yaw, pitch, and roll do not refer to the angles normally used in aviation; the terms yaw, pitch, and roll in aviation refer to 321 Euler angles. Selecting the Body axes as the reference axes results in no orientation difference nor any angular velocity between the Body axes and this reference axes. |
| Body Axes Orientation:YPR 321 | Reports the orientation and angular velocity of the Body axes of the object with respect to a selected reference set of axes, where
the Yaw, Pitch, and Roll angles are defined using the YPR 321 sequence. The reference set of axes can be selected from any axes in the Vector Geometry Tool owned by the object.
Similar to Euler angles, YPR angles specify attitude using three rotations in sequence: a rotation about the reference Z axis is called yaw (Y), a rotation about the reference Y axis is called pitch (P), and a rotation about the reference X axis is called roll (R). Unlike Euler angles, the rotations are not made about axes defined by an earlier rotation: each rotation is made about the reference system's axes. As used in YPR angles, the names yaw, pitch, and roll do not refer to the angles normally used in aviation; the terms yaw, pitch, and roll in aviation refer to 321 Euler angles. Selecting the Body axes as the reference axes results in no orientation difference nor any angular velocity between the Body axes and this reference axes. |
| Boresight AzEl | Unit vector along direction of the sensor's boresight reported in body-fixed axes of the sensor's parent. |
| Boresight Grazing LLA | The point along the sensor boresight direction with the lowest detic altitude, expressed using LLA elements. The point is computed in the sensor's central body fixed coordinate system. The point is undefined when the boresight direction intersects the ground. |
| Boresight Grazing LLR | The point along the sensor boresight direction with the lowest detic altitude, expressed using LLR elements. The point is computed in the sensor's central body fixed coordinate system. The point is undefined when the boresight direction intersects the ground. |
| Boresight Intersection | Intersection point of the sensor boresight direction with the ground surface. |
| Boresight Intersection Lighting | The lighting condition at the intersection point of the sensor boresight direction with the ground surface. |
| Boresight Intersection Times | Time intervals during which the sensor's boresight direction intersects the ground surface. |
| Boresight Vector | Unit vector along direction of the sensor's boresight reported in body-fixed axes of the sensor's parent. |
| Collection of Interval Lists | A time component that produces a collection of related interval lists. |
| Condition | Reports the value of selected scalar conditions. The scalar condition must be defined in the Calculation Tool and owned by the object. |
| Condition Set | Defines a set of conditions for when the elapsed time falls within specified time limits. |
| Crdn Available Times | Time intervals for which a Vector Geometry Tool component for the object is available. |
| Data Provider Detail | Data Provider Detail - hierarchically list the available data providers and all of the included elements. |
| Data Provider Summary | Data Provider Summary - a list of all available data providers. |
| DeckAccess | Reports the output from the Deck Access tool. The Deck Access tool allows you to compute access to a set of objects, not currently defined within the STK scenario, from a single object within the scenario. |
| DeckAccess Data | Geometrical data involving the source and target objects of a DeckAccess computation. |
| Disk Obstruction Times | Compute intervals of time during which the sensor field-of-view is obscured by various central bodies. |
| EOIR Sensor Optics | Common optical system parameters and metrics for EOIR sensors. |
| EOIR Sensor Performance | Spatial, spectral, and radiometric settings and performance metrics for EOIR sensors. |
| EOIR Sensor To Target Metrics | Time dependent metrics for a unique EOIR Sensor-Band / Target pairing. |
| EOIR System Image Quality | EOIR Sensor modulation transfer functions. |
| Footprint Area | Area on the ground inside the sensor footprint. |
| Footprint Area At Distance | Allows user to select either range or altitude as additional limits for sensor projection. This means that overall sensor footprint may be split between this surface and the ground. |
| Interval | A time component that produces a single interval of time. |
| Interval List | A time component that produces an ordered list of time intervals. |
| Number Of Stars In FOV | The number of stars within the sensor field of view based on the star collection specified at the scenario level. |
| Obscuration | Reports data about obstructions of the sensor's field of view generated by Sensor Obscuration tool. |
| Parameter Set: Attitude | The Attitude parameter set defines orientation of one set of Axes from VGT relative to another. This parameter includes the following sub-sets: Quaternion, Euler, DCM and AngleAxis. Quaternion includes four quaternion elements Q1, Q2, Q3, Q4. Euler includes all 12 sequences where within each there are three angles: A, B, C. DCM includes all nine elements of the direction cosine matrix; e.g., XX, XY, etc. AngleAxis includes X, Y, Z components of the unit axis of rotation and RotationAngle. |
| Parameter Set: Cartographic Trajectory | Cartographic Trajectory Parameter Set contains calculations that relate a specified point to the selected central body shape. This parameter set contains the following sub-sets: Cartesian, Centric and Detic. Cartesian includes X, Y, Z and Radius. Centric includes LLR with Latitude, Longitude and Radius, and SubPoint with Cartesian elements. Detic includes several LLA with Latitude, Longitude, Altitude, SurfaceNormal with Cartesian elements without Radius, and SubPoint with Cartesian elements. It also includes Terrain and MSL both with LLA and SubPoint subsets of their own. |
| Parameter Set: Orbit | The Orbit parameter set defines orbital element sets for a Point from VGT orbiting the specified Central Body in the specified coordinate System. Element sets include: Cartesian, Classical, Delaunay, Spherical and Equinoctial (Posigrade and Retrograde). |
| Parameter Set: Trajectory | The Trajectory parameter set defines the position of a specified Point from VGT with respect to the reference System. This parameter set includes the following sub-sets: Cartesian, Cylindrical and Spherical. Cartesian includes X, Y, Z and Radius. Cylindrical includes Azimuth, Height, Radius. Spherical includes Azimuth, Elevation, CoElevation, and Radius. |
| Parameter Set: Vector | The Vector parameter defines the position of one access object relative to the other. The position data can be reported in multiple different reference frames. |
| Pattern Angle Extremals Intersection | Provides information about the points of the sensor pattern where an angle from a reference direction to the pattern reaches a minimum or maximum value. The angle to each point in the sensor pattern is computed in the local horizontal plane, the plane whose normal lies along the sensor's detic nadir (i.e., along the surface normal passing through the sensor's location). The reference direction in this plane is the sensor's ground velocity (i.e., the velocity of the sensor's detic subpoint) that is always perpendicular to the surface normal. For each point in the sensor pattern, the direction from the sensor to that point in the pattern is first projected into the local horizontal plane, and then the angle is measured from the ground velocity direction to this projection. The data provider then searches for the minimum and maximum angle values and reports out information about these extremals in the angle to the sensor pattern. |
| 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. |
| Pattern Intersection At Distance | Allows user to select either range or altitude as additional limits for sensor projection. This means that sensor intersection points are computed where the sensor field of view intersects the limiting surface - either range or altitude. |
| Pattern Intersection Corners | 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. |
| Pattern Intersection Extremals | The extremal points of the sensor pattern intersection report, based upon distance. Four extremals are reported at each time step: the first is the most forward point, the second most rightward point, the third the most behind point, and the fourth the most leftward point. The forward extremal is the largest positive value of the alongtrack distance; the leftward extremal is the largest positive value of the perpendicular-to-groundtrack distance; the behind and leftward extremals are defined analogously, using the largest negative values. Note that it is possible to have multiple points on the pattern located at the same extremal angle; however, the data provider will still return only a single point for each extremal direction. |
| Planes Choose System | Reports the selected plane and its velocity in a specified reference coordinate system. Both plane and coordinate system must be defined in the Vector Geometry Tool. |
| Planes(Fixed) | Reports the selected plane and its velocity in the object's central body fixed coordinate system. The plane must be defined in the Vector Geometry Tool. |
| Planes(ICRF) | Reports the selected plane and its velocity in the object's central body ICRF coordinate system. The plane must be defined in the Vector Geometry Tool. |
| Planes(Inertial) | Reports the selected plane and its velocity in the object's central body inertial coordinate system. The plane must be defined in the Vector Geometry Tool. |
| Planes(J2000) | Reports the selected plane and its velocity in the object's central body J2000 coordinate system. The plane must be defined in the Vector Geometry Tool. |
| Points Choose Plane | Reports projection of the selected point and its velocity on a specified reference plane. Both point and plane must be defined in the Vector Geometry Tool. |
| Points Choose System | Reports the selected point and its velocity in a specified reference coordinate system. Both point and coordinate system must be defined in the Vector Geometry Tool. |
| Points(Fixed) | Reports the selected point and its velocity in the object's central body fixed coordinate system. The point must be defined in the Vector Geometry Tool. |
| Points(ICRF) | Reports the selected point and its velocity in the object's central body ICRF coordinate system. The point must be defined in the Vector Geometry Tool. |
| Points(Inertial) | Reports the selected point and its velocity in the object's central body inertial coordinate system. The point must be defined in the Vector Geometry Tool. |
| Points(J2000) | Reports the selected point and its velocity in the object's central body J2000 coordinate system. The point must be defined in the Vector Geometry Tool. |
| Refraction Settings | The refraction settings of the object. |
| Scalar Calculations | Calculation component that produces scalar time-varying calculations. |
| Specular Point Times | Intervals of time during which the specular reflection point is in or out of the sensor's field of view. |
| Swath Points | A list of locations describing the boundary of the area on the object's central body shape that is in view of the sensor at some point time. |
| Target Schedule | The list of access intervals, computed for each target object, for targeted sensors. |
| Time Array | A time component that produces intervals of time within which there are ordered arrays of times. |
| Time Instant | A time component that produces a single moment in time. |
| User Supplied Data | Values of custom data associated with the object. |
| Vector Choose Axes | Reports the selected vector and its derivative in a specified reference set of axes. Both vector and axes must be defined in the Vector Geometry Tool. |
| Vector Choose Plane | Reports projection of the selected vector and its derivative on a specified reference plane. Both vector and plane must be defined in the Vector Geometry Tool. |
| Vectors(Body) | Reports the selected vector and its derivative in the object's body axes. The vector must be defined in the Vector Geometry Tool. |
| Vectors(Fixed) | Reports the selected vector and its derivative in the object's central body fixed axes. The vector must be defined in the Vector Geometry Tool. |
| Vectors(ICRF) | Reports the selected vector and its derivative in ICRF axes. The vector must be defined in the Vector Geometry Tool. |
| Vectors(Inertial) | Reports the selected vector and its derivative in the object's central body inertial axes. The vector must be defined in the Vector Geometry Tool. |
| Vectors(J2000) | Reports the selected vector and its derivative in J2000 axes. The vector must be defined in the Vector Geometry Tool. |