| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.math4.legacy.filter; |
| |
| import org.apache.commons.math4.legacy.linear.RealMatrix; |
| |
| /** |
| * Defines the measurement model for the use with a {@link KalmanFilter}. |
| * |
| * @since 3.0 |
| */ |
| public interface MeasurementModel { |
| /** |
| * Returns the measurement matrix. |
| * |
| * @return the measurement matrix |
| */ |
| RealMatrix getMeasurementMatrix(); |
| |
| /** |
| * Returns the measurement noise matrix. This method is called by the {@link KalmanFilter} every |
| * correction step, so implementations of this interface may return a modified measurement noise |
| * depending on the current iteration step. |
| * |
| * @return the measurement noise matrix |
| * @see KalmanFilter#correct(double[]) |
| * @see KalmanFilter#correct(org.apache.commons.math4.legacy.linear.RealVector) |
| */ |
| RealMatrix getMeasurementNoise(); |
| } |