Generate radar sensor detections and tracks from driving scenario
Automated Driving Toolbox / Driving Scenario and Sensor Modeling
The Driving Radar Data Generator block generates detection or track reports of targets from an automotive radar sensor model. Use this block to generate sensor data from a driving scenario containing actors and trajectories, which you can read from a Scenario Reader block.
The Driving Radar Data Generator block can simulate clustered or unclustered detections with added random noise and also generate false alarm detections. You can fuse the generated detections with other sensor data and track objects by using a MultiObject Tracker block. You can also output tracks directly from the Driving Radar Data Generator block. To configure whether targets are output as clustered detections, unclustered detections, or tracks, use the Target reporting format parameter.
Actors
— Scenario actor posesScenario actor poses in ego vehicle coordinates, specified as a Simulink bus containing a MATLAB structure.
The structure must contain these fields.
Field  Description  Type 

NumActors  Number of actors  Nonnegative integer 
Time  Current simulation time  Realvalued scalar 
Actors  Actor poses  NumActors length array of actor pose structures 
Each actor pose structure in Actors
must contain these
fields.
Field  Description 

ActorID  Scenariodefined actor identifier, specified as a positive integer. 
Position  Position of actor, specified as a realvalued vector of the form [x y z]. Units are in meters. 
Velocity  Velocity (v) of actor in the x y, and zdirections, specified as a realvalued vector of the form [v_{x} v_{y} v_{z}]. Units are in meters per second. 
Roll  Roll angle of actor, specified as a realvalued scalar. Units are in degrees. 
Pitch  Pitch angle of actor, specified as a realvalued scalar. Units are in degrees. 
Yaw  Yaw angle of actor, specified as a realvalued scalar. Units are in degrees. 
AngularVelocity  Angular velocity (ω) of actor in the x, y, and zdirections, specified as a realvalued vector of the form [ω_{x} ω_{y} ω_{z}]. Units are in degrees per second. 
Clustered detections
— Clustered object detectionsClustered object detections, returned as a Simulink bus containing a MATLAB structure. For more details about buses, see Create Nonvirtual Buses (Simulink).
With clustered detections, the block outputs a single detection per target, where each detection is the centroid of the unclustered detections for that target.
You can pass object detections from these sensors and other sensors to a tracker, such as a MultiObject Tracker block, and generate tracks.
The structure contains these fields.
Field  Description  Type 

NumDetections  Number of detections  Nonnegative integer 
IsValidTime  False when updates are requested at times that are between block invocation intervals  Boolean 
Detections  Object detections  Array of object detection structures of length set by the
Maximum number of reported detections
parameter. Only NumDetections of these are
actual detections. 
Each object detection structure contains these properties.
Property  Definition 

Time  Measurement time 
Measurement  Object measurements 
MeasurementNoise  Measurement noise covariance matrix 
SensorIndex  Unique ID of the sensor 
ObjectClassID  Object classification 
ObjectAttributes  Additional information passed to tracker 
MeasurementParameters  Parameters used by initialization functions of nonlinear Kalman tracking filters 
For rectangular coordinates, Measurement
and
MeasurementNoise
are reported in the rectangular coordinate
system specified by the Coordinate system parameter.
For spherical coordinates, Measurement
and
MeasurementNoise
are reported in the spherical coordinate
system, which is based on the sensor rectangular coordinate system.
Measurement
and MeasurementNoise
Coordinate System  Measurement and
MeasurementNoise Coordinates  

Body  This table shows how coordinates are affected by the Enable range rate measurements parameter.
 
Sensor rectangular  
Sensor spherical  This table shows how coordinates are affected by the Enable elevation angle measurements and Enable range rate measurements parameters.

For ObjectAttributes
, this table describes the additional information
used for tracking.
ObjectAttributes
Attribute  Definition 

TargetIndex  Identifier of the actor, ActorID , that generated the
detection. For false alarms, this value is negative. 
SNR  Signaltonoise ratio of the detection. Units are in dB. 
For MeasurementParameters
, the measurements are relative to the
parent frame. When you set the Coordinate system parameter to
Body
, the parent frame is the ego vehicle body. When you set
Coordinate system to Sensor rectangular
or
Sensor spherical
, the parent frame is the sensor.
MeasurementParameters
Parameter  Definition 

Frame  Enumerated type indicating the frame used to report measurements. When
Frame is set to 'rectangular' ,
detections are reported in Cartesian coordinates. When
Frame is set to 'spherical' ,
detections are reported in spherical coordinates. 
OriginPosition  3D vector offset of the sensor origin from the parent frame origin. 
Orientation  Orientation of the radar sensor coordinate system with respect to the parent frame. 
HasVelocity  Indicates whether measurements contain velocity or range rate components. 
HasElevation  Indicates whether measurements contain elevation components. 
To enable this port, on the Parameters tab, set the
Target reporting format parameter to
Clustered detections
.
Tracks
— Object tracksObject tracks, returned as a Simulink bus containing a MATLAB structure. See Create Nonvirtual Buses (Simulink).
This table shows the structure fields.
Field  Description 

NumTracks  Number of tracks 
Tracks  Array of track structures of a length set by the Maximum number
of tracks parameter. Only the first
NumTracks of these are actual tracks. 
This table shows the fields of each track structure.
Field  Definition 

TrackID  Unique track identifier used to distinguish multiple tracks. 
BranchID  Unique track branch identifier used to distinguish multiple track branches. 
SourceIndex  Unique source index used to distinguish tracking sources in a multiple tracker environment. 
UpdateTime  Time at which the track is updated. Units are in seconds. 
Age  Number of times the track was updated. 
State  Value of state vector at the update time. 
StateCovariance  Uncertainty covariance matrix. 
ObjectClassID  Integer value representing the object classification. The value
0 represents an unknown classification. Nonzero
classifications apply only to confirmed tracks. 
TrackLogic  Confirmation and deletion logic type. This value is always
'History' for radar sensors, to indicate
historybased logic. 
TrackLogicState  Current state of the track logic type, returned as a 1byK logical array. K is the number of latest track logical states recorded.
In the array, 
IsConfirmed  Confirmation status. This field is true if the track
is confirmed to be a real target. 
IsCoasted  Coasting status. This field is true if the track is
updated without a new detection. 
IsSelfReported  Indicate if the track is reported by the tracker. This field is
used in a track fusion environment. It is returned as

ObjectAttributes  Additional information about the track. 
For more details about these fields, see objectTrack
.
The block outputs only confirmed tracks, which are tracks to which the block assigns at least M detections during the first N updates after track initialization. To specify the values M and N, use the M and N for the MoutofN confirmation parameter.
To enable this port, on the Parameters tab, set the
Target reporting format parameter to
Tracks
.
Detections
— Unclustered object detectionsUnclustered object detections, returned as a Simulink bus containing a MATLAB structure. For more details about buses, see Create Nonvirtual Buses (Simulink).
With unclustered detections, the block outputs all detections, and a target can have multiple detections.
You can pass object detections from these sensors and other sensors to a tracker, such as a MultiObject Tracker block, and generate tracks.
The structure must contain these fields.
Field  Description  Type 

NumDetections  Number of detections  integer 
IsValidTime  False when updates are requested at times that are between block invocation intervals  Boolean 
Detections  Object detections  Array of object detection structures of length set by the
Maximum number of reported detections
parameter. Only NumDetections of these are
actual detections. 
Each object detection structure contains these properties.
Property  Definition 

Time  Measurement time 
Measurement  Object measurements 
MeasurementNoise  Measurement noise covariance matrix 
SensorIndex  Unique ID of the sensor 
ObjectClassID  Object classification 
ObjectAttributes  Additional information passed to tracker 
MeasurementParameters  Parameters used by initialization functions of nonlinear Kalman tracking filters 
For rectangular coordinates, Measurement
and
MeasurementNoise
are reported in the rectangular coordinate
system specified by the Coordinate system parameter.
For spherical coordinates, Measurement
and
MeasurementNoise
are reported in the spherical coordinate
system, which is based on the sensor rectangular coordinate system.
Measurement
and MeasurementNoise
Coordinate System  Measurement and
MeasurementNoise Coordinates  

Body  This table shows how coordinates are affected by the Enable range rate measurements parameter.
 
Sensor rectangular  
Sensor spherical  This table shows how coordinates are affected by the Enable elevation angle measurements and Enable range rate measurements parameters.

For ObjectAttributes
, this table describes the additional information
used for tracking.
ObjectAttributes
Attribute  Definition 

TargetIndex  Identifier of the actor, ActorID , that generated the
detection. For false alarms, this value is negative. 
SNR  Signaltonoise ratio of the detection. Units are in dB. 
For MeasurementParameters
, the measurements are relative to the
parent frame. When you set the Coordinate system parameter to
Body
, the parent frame is the ego vehicle body. When you set
Coordinate system to Sensor rectangular
or
Sensor spherical
, the parent frame is the sensor.
MeasurementParameters
Parameter  Definition 

Frame  Enumerated type indicating the frame used to report measurements. When
Frame is set to 'rectangular' ,
detections are reported in Cartesian coordinates. When
Frame is set to 'spherical' ,
detections are reported in spherical coordinates. 
OriginPosition  3D vector offset of the sensor origin from the parent frame origin. 
Orientation  Orientation of the radar sensor coordinate system with respect to the parent frame. 
HasVelocity  Indicates whether measurements contain velocity or range rate components. 
HasElevation  Indicates whether measurements contain elevation components. 
To enable this port, on the Parameters tab, set the
Target reporting format parameter to
Detections
.
Unique identifier of sensor
— Unique sensor identifier0
(default)  positive integerSpecify the unique sensor identifier as a positive integer. Use this
parameter to distinguish between detections or tracks that come from different
sensors in a multisensor system. Specify a unique value for each sensor. If you
do not update Unique identifier of sensor from the default
value of 0
, then the radar returns an error at the start of
simulation.
Update rate (Hz)
— Sensor update rate10
(default)  positive real scalarSpecify the sensor update rate in hertz as a positive real scalar. The reciprocal of the update rate must be an integer multiple of the simulation time interval. The radar generates new reports at intervals defined by this reciprocal value. Any sensor update requested between update intervals contains no detections or tracks.
Translation [ X, Y, Z ] relative to ego origin (m)
— Sensor location on ego vehicle (m)[3.4, 0, 0.2]
(default)  1by3 realvalued vector of form [x
y
z]Specify the sensor location on the ego vehicle body frame in meters as a 1by3 realvalued vector of the form [x y z]. This parameter defines the coordinates of the sensor along the xaxis, yaxis, and zaxis relative to the ego vehicle origin, where:
The xaxis points forward from the vehicle.
The yaxis points to the left of the vehicle.
The zaxis points up from the ground.
The default value corresponds to a radar that is mounted at the center of the front grill of a sedan.
For more details on the ego vehicle coordinate system, see Coordinate Systems in Automated Driving Toolbox.
Rotation [Roll, Pitch, Yaw] relative to ego's frame (deg)
— Mounting rotation angles of radar[0 0 0]
(default)  1by3 realvalued vector of form
[z_{yaw}
y_{pitch}
x_{roll}]Specify the mounting rotation angles of the radar in degrees as a 1by3 realvalued vector of form [z_{yaw} y_{pitch} x_{roll}]. This parameter defines the intrinsic Euler angle rotation of the sensor around the zaxis, yaxis, and xaxis with respect to the ego vehicle body frame, where:
z_{yaw}, or yaw angle, rotates the sensor around the zaxis of the ego vehicle.
y_{pitch}, or pitch angle, rotates the sensor around the yaxis of the ego vehicle. This rotation is relative to the sensor position that results from the z_{yaw} rotation.
x_{roll}, or roll angle, rotates the sensor about the xaxis of the ego vehicle. This rotation is relative to the sensor position that results from the z_{yaw} and y_{pitch} rotations.
These angles are clockwisepositive when looking in the forward direction of the zaxis, yaxis, and xaxis, respectively. If you visualize sensor data from a bird'seye view perspective, then the yaw angle is counterclockwisepositive because you are viewing the data in the negative direction of the zaxis, which points up from the ground.
For more details on this coordinate system, see Coordinate Systems in Automated Driving Toolbox.
Enable elevation angle measurements
— Enable radar to measure target elevation anglesoff
(default) 
on
Select this parameter to model a radar sensor that can estimate target elevation.
Enable range rate measurements
— Enable radar to measure target range rateson
(default) 
off
Select this parameter to enable the radar to measure range rates from target detections.
Add noise to measurements
— Enable addition of noise to radar sensor measurementson
(default) 
off
Select this parameter to add noise to the radar measurements. Otherwise, the
measurements have no noise. Even if you clear this parameter, the measurement
noise covariance matrix, which is reported in the
MeasurementNoise
field of the generated detections
output, represents the measurement noise that is added when Add noise
to measurements is selected.
Enable false reports
— Enable creating false alarm radar detectionson
(default) 
off
Select this parameter to enable creating false alarm radar measurements. If you clear this parameter, the radar reports only actual detections.
Enable occlusion
— Enable lineofsight occlusionon
(default) 
off
Select this parameter to enable lineofsight occlusion, where the radar generates detection only from objects for which the radar has a direct line of sight. For example, with this parameter enabled, the radar does not generate a detection for a vehicle that is behind another vehicle and blocked from view.
Maximum number of target reports
— Maximum number of detections or tracks50
(default)  positive integerSpecify the maximum number of detections or tracks that the sensor reports as a positive integer. The sensor reports detections in the order of increasing distance from the sensor until reaching this maximum number.
Target reporting format
— Format of generated target reportsClustered detections
(default) 
Tracks

Detections
Specify the format of generated target reports as one of these options:
Clustered detections
— The block generates target
reports as clustered detections, where each target
is reported as a single detection that is the centroid of the unclustered
target detections. The block returns clustered detections at the
Clustered detections output port.
Tracks
— The block generates target reports as
tracks, which are clustered detections that
have been processed by a tracking filter. The block returns clustered
detections at the Tracks output port.
Detections
— The block generates target reports as
unclustered detections, where each target can
have multiple detections. The block returns clustered detections at the
Detections output port.
Coordinate system
— Coordinate system of reported detectionsBody
(default) 
Sensor rectangular

Sensor spherical
Coordinate system of reported detections, specified as one of these options:
Body
— Detections are reported in the
rectangular body system of the ego vehicle.
Sensor rectangular
— Detections are reported in
the rectangular body system of the radar sensor.
Sensor spherical
— Detections are reported in a
spherical coordinate system that is centered at the radar sensor and
aligned with the orientation of the radar on the ego vehicle.
Source of output bus name
— Source of output bus nameAuto
(default) 
Property
Source of output bus name, specified as one of these options:
Auto
— The block automatically creates a
bus name.
Property
— Specify the bus name by using
the Specify an output bus name parameter.
Specify an output bus name
— Name of output busBusDrivingRadarDataGenerator
(default)  valid bus nameSpecify the name of the actor poses bus returned in the Actors output port.
To enable this parameter, set the Source of output bus
name parameter to Property
.
Azimuth resolution (deg)
— Azimuth resolution of radar4
(default)  positive real scalarSpecify the azimuth resolution of the radar in degrees as a positive scalar. The azimuth resolution defines the minimum separation in azimuth angle at which the radar can distinguish between two targets. The azimuth resolution is typically the 3 dB downpoint of the azimuth angle beamwidth of the radar.
Elevation resolution (deg)
— Elevation resolution of radar5
(default)  positive real scalarSpecify the elevation resolution of the radar in degrees as a positive real scalar. The elevation resolution defines the minimum separation in elevation angle at which the radar can distinguish between two targets. The elevation resolution is typically the 3 dB downpoint in elevation angle beamwidth of the radar.
To enable this parameter, on the Parameters tab, select the Enable elevation angle measurements parameter.
Range resolution (m)
— Range resolution of radar2.5
(default)  positive real scalarSpecify the range resolution of the radar in meters as a positive real scalar. The range resolution defines the minimum separation in range at which the radar can distinguish between two targets.
Range rate resolution (m/s)
— Range rate resolution of radar0.5
(default)  positive real scalarSpecify the range rate resolution of the radar in meters per second as a positive real scalar. The range rate resolution defines the minimum separation in range rate at which the radar can distinguish between two targets.
To enable this parameter, on the Parameters tab, select the Enable range rate resolution parameter.
Azimuth bias fraction
— Azimuth bias fraction of radar0.1
(default)  nonnegative scalarSpecify the azimuth bias fraction of the radar as a nonnegative scalar. Azimuth bias is expressed as a fraction of the azimuth resolution specified in the Azimuth resolution (deg) parameter. This value sets a lower bound on the azimuthal accuracy of the radar and is dimensionless.
Elevation bias fraction
— Elevation bias fraction of radar0.1
(default)  nonnegative scalarSpecify the elevation bias fraction of the radar as a nonnegative scalar. Elevation bias is expressed as a fraction of the elevation resolution specified by the Elevation resolution (deg) parameter. This value sets a lower bound on the elevation accuracy of the radar and is dimensionless.
To enable this parameter, on the Parameters tab, select the Enable elevation angle measurements parameter.
Range bias fraction
— Range bias fraction0.05
(default)  nonnegative scalarSpecify the range bias fraction of the radar as a nonnegative scalar. Range bias is expressed as a fraction of the range resolution specified by the Range resolution (m) property. This property sets a lower bound on the range accuracy of the radar and is dimensionless.
Range rate bias fraction
— Range rate bias fraction0.05
(default)  nonnegative scalarSpecify the range rate bias fraction of the radar as a nonnegative scalar. Range rate bias is expressed as a fraction of the range rate resolution specified by the Range rate resolution (m/s) parameter. This property sets a lower bound on the range rate accuracy of the radar and is dimensionless.
To enable this parameter, on the Parameters tab, select the Enable range rate measurements parameter.
Total angular field of view [AZ, EL] (deg)
— Angular field of view of radar[20 5]
(default)  1by2 positive realvalued vector of form [azfov,
elfov]
Specify the angular field of view of the radar in degrees as a 1by2
positive realvalued vector of the form [azfov elfov]
. The
field of view defines the total angular extent spanned by the sensor. The
azimuth field of view, azfov
, must lie in the interval (0,
360]. The elevation field of view, elfov
, must lie in the
interval (0, 180].
Range limits [MIN, MAX] (m)
— Minimum and maximum range of radar[0 150]
(default)  1by2 nonnegative realvalued vector of form [min
max]
Specify the minimum and maximum range of the radar in meters as a 1by2
nonnegative realvalued vector of the form [min max]
. The
radar does not detect targets that are outside this range. The maximum range,
max
, must be greater than the minimum range,
min
.
Range rate limits [MIN, MAX] (m/s)
— Minimum and maximum range rate of radar (m/s)[100 100]
(default)  1by2 realvalued vector of form [min max]
Specify the minimum and maximum range rate of radar in meters per second as
a 1by2 realvalued vector of the form [min max]
. The radar
does not detect targets that are outside this range rate. The maximum range
rate, max
, must be greater than the minimum range rate,
min
.
To enable this parameter, on the Parameters tab, select the Enable range rate measurements parameter.
Detection probability
— Probability of detecting a target0.9
(default)  scalar in range (0, 1]Specify the probability of detecting a target as a scalar in the range (0, 1]. This quantity defines the probability of detecting a target with a radar crosssection, with the radar crosssection specified by the Reference target RCS (dBsm) parameter at the reference detection range specified by the Reference target range (m) parameter.
False alarm rate
— False alarm report rate1e06
(default)  positive real scalar in range [10^{–7},
10^{–3}]Specify the false alarm report rate within each radar resolution cell as a positive real scalar in the range [10^{–7}, 10^{–3}]. Units are dimensionless. The block determines resolution cells from the Azimuth resolution (deg) and Range resolution (m) parameters and, when enabled, from the Elevation resolution (deg) and Range rate resolution (m/s) parameters.
Reference target range (m)
— Reference range for given probability of detection100
(default)  positive real scalarSpecify the reference range for the given probability of detection and the given reference radar crosssection (RCS) in meters as a positive real scalar. The reference range is the range at which a target having a radar crosssection specified by the Reference target RCS (dBsm) parameter is detected with a probability of detection specified by the Detection probability parameter.
Reference target RCS (dBsm)
— Reference radar crosssection for given probability of detection0
(default)  real scalarSpecify the reference radar crosssection (RCS) for a given probability of detection and reference range in decibel square meters as a real scalar. The reference RCS is the RCS value at which a target is detected with a probability specified by the Detection probability parameter at the specified Reference target range (m) parameter value.
Center frequency (Hz)
— Center frequency of radar band77e9
(default)  positive real scalarSpecify the center frequency of the radar band in hertz as a positive scalar.
Filter initialization function name
— Kalman filter initialization functioninitcvekf
(default)  function nameSpecify the Kalman filter initialization function as a function handle or as a character vector or string scalar of the name of a valid Kalman filter initialization function.
The table shows the initialization functions that you can use to specify Filter initialization function name.
Initialization Function  Function Definition 

initcaabf  Initialize constantacceleration alphabeta Kalman filter 
initcvabf  Initialize constantvelocity alphabeta Kalman filter 
initcakf  Initialize constantacceleration linear Kalman filter. 
initcvkf  Initialize constantvelocity linear Kalman filter. 
initcaekf  Initialize constantacceleration extended Kalman filter. 
initctekf  Initialize constantturnrate extended Kalman filter. 
initcvekf  Initialize constantvelocity extended Kalman filter. 
initcaukf  Initialize constantacceleration unscented Kalman filter. 
initctukf  Initialize constantturnrate unscented Kalman filter. 
initcvukf  Initialize constantvelocity unscented Kalman filter. 
You can also write your own initialization function. The function must have the following syntax:
filter = filterInitializationFcn(detection)
objectDetection
object. The output of this function must be a
tracking filter object, such as trackingKF
, trackingEKF
, trackingUKF
, or trackingABF
.
To guide you in writing this function, you can examine the details of the supplied functions from within MATLAB. For example:
type initcvekf
To enable this parameter, on the Parameters tab, set
the Target reporting format parameter to
Tracks
.
M and N for the MoutofN confirmation
— Threshold for track confirmation[2 3]
(default)  1by2 vector of positive integersSpecify the threshold for track confirmation as a 1by2 vector of positive
integers of the form [M N]
. A track is confirmed if it
receives at least M
detections in the last
N
updates. M
must be less than or
equal to N
.
When setting M
, take into account the
probability of object detection for the sensors. The probability of
detection depends on factors such as occlusion or clutter. You can
reduce M
when tracks fail to be confirmed or
increase M
when too many false detections are
assigned to tracks.
When setting N
, consider the number of times you
want the tracker to update before it makes a confirmation decision.
For example, if a tracker updates every 0.05 seconds, and you want to
allow 0.5 seconds to make a confirmation decision, set N =
10
.
To enable this parameter, on the Parameters tab, set
the Target reporting format parameter to
Tracks
.
P and R for the PoutofR deletion
— Threshold for track deletion[5 5]
(default)  1by2 vector of positive integersSpecify the threshold for track deletion as a twoelement vector of 1by2
vector of positive integers of the form [P R]
. If a
confirmed track is not assigned to any detection P
times in
the last R
tracker updates, then the track is deleted.
P
must be less than or equal to
R
.
To enable this parameter, on the Parameters tab, set
the Target reporting format parameter to
Tracks
.
Random number generation
— Method to specify random number generator seedRepeatable
(default) 
Specify seed

Not repeatable
Specify the method to set the random number generator seed as one of the options in the table.
Option  Description 

Repeatable  The block generates a random initial seed for the
first simulation and reuses this seed for all subsequent
simulations. Select this parameter to generate repeatable
results from the statistical sensor model. To change this
initial seed, at the MATLAB command prompt, enter: 
Specify seed  Specify your own random initial seed for reproducible results by using the Initial seed parameter. 
Not repeatable  The block generates a new random initial seed after each simulation run. Select this parameter to generate nonrepeatable results from the statistical sensor model. 
Initial seed
— Random number generator seed0
(default)  nonnegative integer less than 2^{32}Specify the random number generator seed as a nonnegative integer less than 2^{32}.
To enable this parameter, set the Random number
generation parameter to Specify
seed
.
Target profiles definition
— Method to specify target profilesParameters
(default)  MATLAB expression
 From Scenario Reader block
Specify the method to specify target profiles, which are the physical and radar characteristics of all targets in the driving scenario, as one of these options:
Parameters
— The block obtains the
target profiles from the parameters enabled on the Target
Profiles tab when you select this option.
MATLAB expression
— The block obtains
the actor profiles from the MATLAB expression specified by the MATLAB expression
for target profiles parameter.
From Scenario Reader block
— The block
obtains the actor profiles from the scenario specified by the Scenario Reader block.
MATLAB expression for target profiles
— MATLAB expression for target profilesSpecify the MATLAB expression for actor profiles, as a MATLAB structure, a MATLAB structure array, or a valid MATLAB expression that produces such a structure or structure array.
If your Scenario Reader block reads data from a drivingScenario
object, to obtain
the actor profiles directly from this object, set this expression to call the
actorProfiles
function on the
object. For example: actorProfiles(scenario)
.
The default target profile expression produces a MATLAB structure and has this form:
struct('ClassID',0,'Length',4.7,'Width',1.8,'Height',1.4, ... 'OriginOffset',[1.35 0 0],'RCSPattern',[10 10;10 10], ... 'RCSAzimuthAngles',[180 180],'RCSElevationAngles',[90 90])
To enable this parameter, set the Target profiles
definition parameter to MATLAB
expression
.
Unique identifier for actors
— Scenariodefined actor identifier[]
(default)  positive integer  lengthL vector of unique positive integersSpecify the scenariodefined actor identifier as a positive integer or
lengthL vector of unique positive integers.
L must equal the number of actors input into the
Actors input port. The vector elements must match
ActorID
values of the actors. You can specify
Unique identifier for actors as []
.
In this case, the same actor profile parameters apply to all actors.
Example: [1 2]
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Userdefined integer to classify actors
— Userdefined classification identifier0
(default)  integer  lengthL vector of integersSpecify the userdefined classification identifier as an integer or
lengthL vector of integers. When Unique
identifier for actors is a vector, this parameter is a vector of
the same length with elements in onetoone correspondence to the actors in
Unique identifier for actors. When Unique
identifier for actors is empty, []
, you must
specify this parameter as a single integer whose value applies to all
actors.
Example: 2
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Length of actors' cuboids (m)
— Length of actor cuboids4.7
(default)  positive real scalar  lengthL vector of positive valuesSpecify the length of actor cuboids as a positive real scalar or
lengthL vector of positive values. When Unique
identifier for actors is a vector, this parameter is a vector of
the same length with elements in onetoone correspondence to the actors in
Unique identifier for actors. When Unique
identifier for actors is empty, []
, you must
specify this parameter as a positive real scalar whose value applies to all
actors. Units are in meters.
Example: 6.3
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Width of actors' cuboids (m)
— Width of actor cuboids1.8
(default)  positive real scalar  lengthL vector of positive valuesSpecify the width of actor cuboids as a positive real scalar or
lengthL vector of positive values. When Unique
identifier for actors is a vector, this parameter is a vector of
the same length with elements in onetoone correspondence to the actors in
Unique identifier for actors. When Unique
identifier for actors is empty, []
, you must
specify this parameter as a positive real scalar whose value applies to all
actors. Units are in meters.
Example: 4.7
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Height of actors' cuboids (m)
— Height of actor cuboids1.4
(default)  positive real scalar  lengthL vector of positive valuesSpecify the height of actor cuboids as a positive real scalar or
lengthL vector of positive values. When Unique
identifier for actors is a vector, this parameter is a vector of
the same length with elements in onetoone correspondence to the actors in
Unique identifier for actors. When Unique
identifier for actors is empty, []
, you must
specify this parameter as a positive real scalar whose value applies to all
actors. Units are in meters.
Example: 2.0
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Rotational center of actors from bottom center (m)
— Rotational center of actors{[1.35, 0, 0]}
(default)  lengthL cell array of realvalued 1by3
vectorsSpecify the rotational center of actors as a lengthL
cell array of realvalued 1by3 vectors. Each vector represents the offset of
the rotational center of an actor from the bottomcenter of the actor. For
vehicles, the offset corresponds to the point on the ground beneath the center
of the rear axle. When Unique identifier for actors is a
vector, this parameter is a cell array of vectors with cells in onetoone
correspondence to the actors in Unique identifier for
actors. When Unique identifier for actors is
empty, []
, you must specify this parameter as a cell array
of one element containing an offset vector whose values apply to all actors.
Units are in meters.
Example: {[1.35, 0.2, 0.3]}
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Radar cross section pattern (dBsm)
— Radar crosssection{[10, 10; 10, 10]}
(default)  realvalued QbyP matrix  lengthL cell array of realvalued
QbyP matricesSpecify the radar crosssection (RCS) of actors as a realvalued
QbyP matrix or
lengthL cell array of realvalued
QbyP matrices. Q
is the number of elevation angles specified by the corresponding cell in the
Elevation angles defining RCSPattern (deg) parameter.
P is the number of azimuth angles specified by the
corresponding cell in Azimuth angles defining RCSPattern
(deg) parameter. When Unique identifier for
actors is a vector, this parameter is a cell array of matrices
with cells in onetoone correspondence to the actors in Unique
identifier for actors. The values of Q and
P can differ between cells. When Unique
identifier for actors is empty, []
, you must
specify this parameter as a cell array with one element containing a matrix
whose values apply to all actors. Units are in dBsm.
Example: {[10 14 10; 9 13 9]}
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Azimuth angles defining RCSPattern (deg)
— Azimuth angles of radar crosssection pattern{[180 180]}
(default)  lengthL cell array of realvalued
Plength vectorsSpecify the azimuth angles of radar crosssection patterns as a
lengthL cell array of realvalued
Plength vectors . Each vector represents the azimuth angles
of the P columns of the radar crosssection specified in
Radar cross section pattern (dBsm). When
Unique identifier for actors is a vector, this
parameter is a cell array of vectors with cells in onetoone correspondence to
the actors in Unique identifier for actors. The value of
P can differ between cells. When Unique
identifier for actors is empty, []
, you must
specify this parameter as a cell array with one element containing a vector
whose values apply to all actors. Units are in degrees. Azimuth angles lie in
the range –180° to 180° and must be in strictly increasing order.
When the radar crosssections specified in the cells of Radar cross section pattern (dBsm) all have the same dimensions, you need only specify a cell array with one element containing the azimuth angle vector.
Example: {[90 90]}
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Elevation angles defining RCSPattern (deg)
— Elevation angles of radar crosssection pattern{[90 90]}
(default)  lengthL cell array of realvalued
Qlength vectorsSpecify the elevation angles of radar crosssection patterns as a
lengthL cell array of realvalued
Qlength vectors . Each vector represent the elevation
angles of the Q columns of the radar crosssection specified
in Radar cross section pattern (dBsm). When
Unique identifier for actors is a vector, this
parameter is a cell array of vectors with cells in onetoone correspondence to
the actors in Unique identifier for actors. The value of
Q can differ between cells. When Unique
identifier for actors is empty, []
, you must
specify this parameter as a cell array with one element containing a vector
whose values apply to all actors. Units are in degrees. Elevation angles lie in
the range –90° to 90° and must be in strictly increasing order.
When the radar crosssections that are specified in the cells of Radar cross section pattern (dBsm) all have the same dimensions, you need only specify a cell array with one element containing an elevation angle vector.
Example: {[25 25]}
To enable this parameter, set the Target profiles
definition parameter to
Parameters
.
Ha hecho clic en un enlace que corresponde a este comando de MATLAB:
Ejecute el comando introduciéndolo en la ventana de comandos de MATLAB. Los navegadores web no admiten comandos de MATLAB.
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.