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## org.apache.commons.math3.filter
Interface MeasurementModel

All Known Implementing Classes:
  DefaultMeasurementModel

    public interface MeasurementModel

Defines the measurement model for the use with a `KalmanFilter`.

Since:
  3.0
Version:
  $Id: MeasurementModel.java 1416643 2012-12-03 19:37:14Z tn $

Method Summary
`RealMatrix` | `getMeasurementMatrix()` Returns the measurement matrix.
`RealMatrix` | `getMeasurementNoise()` Returns the measurement noise matrix.

Method Detail

### getMeasurementMatrix

    RealMatrix getMeasurementMatrix()

  Returns the measurement matrix.

  Returns:
    the measurement matrix

### getMeasurementNoise

    RealMatrix getMeasurementNoise()

  Returns the measurement noise matrix. This method is called by the `KalmanFilter` every correction step, so implementations of this interface may return a modified measurement noise depending on the current iteration step.

  Returns:
    the measurement noise matrix
  See Also:
    `KalmanFilter.correct(double[])`, `KalmanFilter.correct(org.apache.commons.math3.linear.RealVector)`

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