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/* Kalman Filter */ | |
var Qvalue: Float = 3.0f | |
val locationTimeInMillis = location.elapsedRealtimeNanos / 1000000 | |
val elapsedTimeInMillis = locationTimeInMillis - runStartTimeInMillis | |
if (currentSpeed == 0.0f) { | |
Qvalue = 3.0f //3 meters per second | |
} else { | |
Qvalue = currentSpeed // meters per second | |
} | |
kalmanFilter.Process(location.latitude, location.longitude, location.accuracy, elapsedTimeInMillis, Qvalue) | |
val predictedLat = kalmanFilter.get_lat() | |
val predictedLng = kalmanFilter.get_lng() | |
val predictedLocation = Location("")//provider name is unecessary | |
predictedLocation.latitude = predictedLat//your coords of course | |
predictedLocation.longitude = predictedLng | |
val predictedDeltaInMeters = predictedLocation.distanceTo(location) | |
if (predictedDeltaInMeters > 60) { | |
Log.d(LOG_TAG, "Kalman Filter detects mal GPS, we should probably remove this from track") | |
kalmanFilter.consecutiveRejectCount += 1 | |
if (kalmanFilter.consecutiveRejectCount > 3) { | |
kalmanFilter = KalmanLatLong(3f) //reset Kalman Filter if it rejects more than 3 times in raw. | |
} | |
kalmanNGLocationList.add(location) | |
return false | |
} else { | |
kalmanFilter.consecutiveRejectCount = 0 | |
} |
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