Adding nois to GPS and IMU

[Craftech001]

Dear community and Cosys-Airsim team. I am using Cosys-Airsim to simulate some sensor fusion algorithm. When I try to add some noise to GPS sensors, the GNSS data is not crashes by any noise, even if I make the sigma parameter upto 100. May any one give me some suggestions how should I deal with this issue. I am using latest Cosys_Airsim with UE 5.5
{
"SettingsVersion": 1.2,
"SimMode": "Car",
"Vehicles": {
"Drone1": {
"VehicleType": "PhysXCar",
"EnableCollisionPassthrogh": false,
"Sensors": {
"gps1": {
"SensorType": 3,
"Enabled": true,
"X": 0.25, "Y": 0.0, "Z": 0.0,

    "EphTimeConstant": 0.3,    
    "EpvTimeConstant": 0.3,    
    "EphInitial": 80.0,          
    "EpvInitial": 80.0,          
    "EphFinal":   20.0,          
    "EpvFinal":   30.0,          
    "EphMin3d":   30.0,          
    "EphMin2d":   40.0,          

    "UpdateLatency": 0.05,      
    "UpdateFrequency": 10,      
    "StartupDelay": 0   
  },

  "gps2": {
    "SensorType": 3,
    "Enabled": true,
    "X": -0.25, "Y": 0.0, "Z": 0.0,    

    "EphTimeConstant": 0.3,
    "EpvTimeConstant": 0.3,
    "EphInitial": 80.0,
    "EpvInitial": 90.0,
    "EphFinal":   102.0,
    "EpvFinal":   113.0,
    "EphMin3d":   113.0,
    "EphMin2d":   114.0,

    "UpdateLatency": 0.05,
    "UpdateFrequency": 20,
    "StartupDelay": 0
  }
}
}

},

"Wind": { "Enabled": false }
}