Synthetic Aperture RADAR

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Class in Zendir.Classes | Inherits from RADAR

Declaration

class SyntheticApertureRADAR;

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Description

The Synthetic Aperture RADAR (SAR) class is able to detect the presence of objects within the simulation. This requires a RADAR sensor to be attached to the spacecraft or ground object and will produce maps and textures when the sensor is active and is using a visualization engine.

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Properties

Declared	Description
ErrorConstant	Amount of constant error to apply to distance values per sample
ErrorDynamic	Amount of dynamic noise to apply to distance values
Range	The max effective distance of the radar
Resolution	The resolution of the output samples
SampleRate	The time between RADAR samples
Seed	The seed value for the noise modelling

Inherited	Description
Bandwidth	The bandwidth of the RADAR signal, which is measured in Hz
Behaviours	A collection of behaviours attached to this object.
CaptureOnTick	A flag whether the sensor should capture the data each frame.
CenterOfMassB_B	The center of mass of the component in respect to the bodyframe (B) of the component. This is isolated from any childrenand exists in isolation.
CenterOfMassDot_LB_B	The center of mass time-derivative of the component within itsown local coordinates. This does not include any of the sub-componentsand exists in isolation.
CenterOfMassDotB_B	The center of mass time-derivative of the component relative tothe body frame (B). This does not include any of the sub-componentsand exists in isolation.
CenterOfMassL_L	The center of mass of the component within its own localcoordinates. This does not include any of the sub-components andexists in isolation.
CenterOfMassPrime_LB_B	The center of mass general-derivative of the component within itsown local coordinates. This does not include any of the sub-componentsand exists in isolation.
CenterOfMassPrimeB_B	[m/s] The center of mass general-derivative of the component relativeto the body frame (B). This does not include any of the sub-componentsand exists in isolation.
Children	A collection of children attached to this object.
DCM_BN	The rotational DCM matrix between the body frame (B) at the topof this component chain and the inertial frame (N).
DCM_LB	The rotational DCM matrix between the component frame of thisobject (L) relative to the body frame (B).
DCM_LN	The DCM rotational matrix of the component relative to theinertial origin (N) of the world.
DCM_LP	The DCM matrix of the component in the parent’s frame (P), takenfrom the Component Transform (PL).
DetectionThreshold	The detection threshold of the RADAR system, which is used to determinethe minimum signal strength required to detect an object.
DistanceNoise	The noise for calculating the distance to the target, as a fraction of the distance.
FOV	The field of view of the radar
Gain	The antenna gain of the RADAR in decibels
In_DeviceStatusMsg	The Device status message for the physical component whetherthe device is available.
IsDetected	A boolean value indicating if a target has been detected by the RADAR sensor,based on the signal to noise ratio and the sensor’s detection threshold.
IsEnabled	Is true if the object is currently enabled.
LocalForward	The direction of the transform frame’s forward vector, which is along the Y axis.
LocalRight	The direction of the transform frame’s right vector, which is along the X axis.
LocalUp	The direction of the transform frame’s up vector, which is along the Z axis.
Mass	The component mass defined in the object. This is independentof any parent or children objects and exists in isolation.
MassDot	The component mass time-derivative defined in the object. Thisis independent of any parent or children objects and exists in isolation.
Models	A collection of models attached to this object.
MomentOfInertia_LB	The moment of inertia of the component, measured at thelocal center of mass, represented with its own local coordinates.This does not include any of the sub-components and exists inisolation.
MomentOfInertiaB_B	The moment of inertia of this component, measured inthe body frame relative to the parented body. This is independentof any children and exists in isolation.
MomentOfInertiaPrime_LB	The derivative of the moment of inertia of the component,measured at the local center of mass, represented with its own localcoordinates. This does not include any of the sub-components andexists in isolation.
MomentOfInertiaPrimeB_B	The derivative of the moment of inertia of the component,represented in the body frame (B). This is independent and exists inisolation.
Name	The display name or tag of this object.
NumTargets	The number of targets that the RADAR sensor can see.
Out_ComponentMassMsg	The component mass message defines the set of mass properties andstates of the system within this component locally. This is independentof any parent or children properties or objects.
Out_RADARDataMsg	The RADAR data message that is output by the RADAR sensor.
Out_TransformMsg	This defines the base transform message that stores the state of the transform of this object.
Parent	The currently attached parent object (if any).
Position	[m] The position of the object relative to the parent or to world origin, if no parent exists.
Position_BN_N	The position of the body (the root parent B) in theinertial frame relative to the inertial point (N).
Position_LB_B	The position of the component relative to the rootobject of this hierarchy. This is in the inertial frameand if the component is the root object, then there willbe no position.
Position_LN_N	The position of the inertial world space. This position isderived from the world’s transform (N).
Position_LP_P	The position of the object relative to the parented object (P).If there is no parent object, then this will be in the inertialframe.
Power	The transmitter power when sending a signal
Root	The root object in the parent chain.
Rotation	[-] The rotation of the object relative to the parent or to the world origin, if no parent exists.
SignalDistance	The estimated distance to the target detected by the RADAR sensor.
SignalToNoise	The signal to noise of the RADAR sensor, calculated as the total signaldivided by the total noise.
Temperature	The temperature of the RADAR system, which is used to calculatethe noise floor of the system.
Thermal	A reference to the thermal model that is attached to this object.This will allow the object to have thermal properties and be ableto be used in thermal simulations.
TotalNoise	The total noise of the RADAR sensor.
TotalSignal	The total signal of the RADAR sensor, which is the sum of all target signals.
Wavelength	The wavelength of the RADAR signal, typically an X-band wavelength willbe sub-meter, while a L-band wavelength will be in the meter range.

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Methods

Declared	Description
OnPing	Executed when a sample is created through Unrealand will ping the components.

Inherited	Description
AddObject	Returns a new simulation object with the specified type.
AddTarget	Adds a target to the list of targets that the RADAR sensor can sense. Thiswill create a new target with the specified parameters.
Attach	Attempts to attach this object to a new parent. This will only work if the current object is no parented to anyother object.
Capture	A method that will capture the data of the payload and store it insome form of byte array.
ClearBuffer	Clears the cache of the RADAR sensor, which will remove all datafrom the output message.
ContainsModelWithID	Returns true if an attached model satisfies the specified ID.
ContainsModelWithType	Returns true if an attached model satisfies the specified type.
Destroy	Removes the current object from the simulation.
Detach	This is an action to detach the current object from its parent, if it exists and move it to another object or tojust exist within the simulation.
FindBehavioursWithType	Returns all attached behaviours that satisfies the specified type.
FindBehaviourWithID	Returns an attached behaviour that satisfies the specified ID.
FindBehaviourWithType	Returns an attached behaviour that satisfies the specified type.
FindChildrenWithType	Returns all attached children that satisfies the specified type.
FindChildWithID	Returns an attached child that satisfies the specified ID.
FindChildWithType	Returns an attached child that satisfies the specified type.
FindModelsWithType	Returns all attached models that satisfies the specified type.
FindModelWithID	Returns an attached model that satisfies the specified ID.
FindModelWithType	Returns an attached model that satisfies the specified type.
FindParentWithID	Returns an attached parent that satisfies the specified ID.
FindParentWithType	Returns an attached parent that satisfies the specified type.
FindRootWithID	Returns a root object that satisfies the specified ID.
FindRootWithType	Returns a root object that satisfies the specified type.
GetModel	Returns a valid assigned model with the specified type.
GetWorldTransform	Returns the world transform of the object which is relative to the parent. If no parent exists, this will be thetransform of the object in world space.
ReadBodyTransform	This method will reset the dirty flag on the mass so thatit has been read successfully and is valid.
RemoveTarget	Removes a target from the list of targets that the RADAR sensor can see.
UpdateMassProperties	Updates the mass properties of the current physical object ata particular time.