perturb

Apply perturbations to object

Since R2024a

Syntax

offsets = perturb(obj)

Description

offsets = perturb(obj) applies the perturbations defined on the object, obj and returns the offset values. You can define perturbations on the object by using the perturbations function.

Examples

collapse all

Perturb Accuracy of insSensor

Open Live Script

Create an insSensor object.

sensor = insSensor

sensor = 
  insSensor with properties:

           MountingLocation: [0 0 0]            m    
               RollAccuracy: 0.2                deg  
              PitchAccuracy: 0.2                deg  
                YawAccuracy: 1                  deg  
           PositionAccuracy: [1 1 1]            m    
           VelocityAccuracy: 0.05               m/s  
       AccelerationAccuracy: 0                  m/s² 
    AngularVelocityAccuracy: 0                  deg/s
                  TimeInput: [1⨯1 logical]           
               RandomStream: 'Global stream'

Define the perturbation on the RollAccuracy property as three values with an equal possibility each.

values = {0.1 0.2 0.3}

values=1×3 cell array
    {[0.1000]}    {[0.2000]}    {[0.3000]}

probabilities = [1/3 1/3 1/3]

probabilities = 1×3

    0.3333    0.3333    0.3333

perturbations(sensor,'RollAccuracy','Selection',values,probabilities)

ans=7×3 table
            Property                Type                        Value                 
    _________________________    ___________    ______________________________________

    "RollAccuracy"               "Selection"    {1x3 cell}    {[0.3333 0.3333 0.3333]}
    "PitchAccuracy"              "None"         {[   NaN]}    {[                 NaN]}
    "YawAccuracy"                "None"         {[   NaN]}    {[                 NaN]}
    "PositionAccuracy"           "None"         {[   NaN]}    {[                 NaN]}
    "VelocityAccuracy"           "None"         {[   NaN]}    {[                 NaN]}
    "AccelerationAccuracy"       "None"         {[   NaN]}    {[                 NaN]}
    "AngularVelocityAccuracy"    "None"         {[   NaN]}    {[                 NaN]}

Perturb the sensor object using the perturb function.

rng(2020)
perturb(sensor);
sensor

sensor = 
  insSensor with properties:

           MountingLocation: [0 0 0]            m    
               RollAccuracy: 0.5                deg  
              PitchAccuracy: 0.2                deg  
                YawAccuracy: 1                  deg  
           PositionAccuracy: [1 1 1]            m    
           VelocityAccuracy: 0.05               m/s  
       AccelerationAccuracy: 0                  m/s² 
    AngularVelocityAccuracy: 0                  deg/s
                  TimeInput: [1⨯1 logical]           
               RandomStream: 'Global stream'

The RollAccuracy is perturbed to 0.5 deg.