Description | Example | Return Message | Group

Point Fixed

Control fixed sensor pointing for a specified sensor instance

Syntax

Point <SensorObjectPath> Fixed {OrientMethod} <MethodData>

Related Commands

Description

The Point Fixed command controls fixed sensor pointing for a specified sensor instance. Fixed sensor pointing allows you to specify the orientation of the sensor in the parent object's body coordinate frame. It always points in the same direction relative to the parent.

While the sensor never moves relative to the parent object, the motion of the parent object affects the direction in which the sensor is pointed in inertial space. Therefore, you should understand the behavior of the parent object so that you can accurately determine the sensor's behavior.

<MethodData> for Fixed sensor pointing is dependent on the {OrientMethod} used. Valid values for {OrientMethod} and their associated <MethodData> are as follows:

{OrientMethod}	<MethodData>	Description
AzEl	<Azimuth> <Elevation> [{AboutBoresight}]	{AboutBoresight} can be Hold or Rotate.
Euler	<Sequence> <Rot1> <Rot2> <Rot3>	<Sequence> can be 121, 123, 131, 132, 212, 213, 231, 232, 312, 313, 321, 323, where 1 is the rotation about the Z axis, 2 is the rotation about the Y axis and 3 is the rotation about the Z axis.
YPR	<Sequence> <Yaw> <Pitch> <Roll>	<Sequence> can be 123, 132, 213, 231, 312, 321, where 1 is the rotation about the group X axis, 2 is the rotation about the group Y axis and 3 is the rotation about the group Z axis. Group axes are body-fixed axes of the parent object.
Quaternion	<q1> <q2> <q3> <q4>	N/A

All angle values should be entered in degrees.

Example

To point the Shuttle's Horizon sensor to 80 degrees azimuth at an elevation of 45 degrees:

Point */Satellite/Shuttle/Sensor/Horizon Fixed AzEl 80 45

ReturnMessage

Group Membership

This command belongs to the following group(s):

Sensors

Version

4.0