Research on Clutter Suppression Method of UWB Signal in the Mine Under the Landslide

摘要

When the signal of UWB through the coal mine tunnel, the signal of effective target scattering is formed, and the strong back-scattering clutter signal which comes from the roadway wall is also produced. In order to suppress or eliminate the interference of the roadway wall clutter, this paper presents a clutter suppression algorithm based on Kalman filter model and SVM. In this method, the Kalman filter model suitable for the underground environment is constructed. The clutter estimation and the target-clutter separation are treated as the process of mutual influence. The target probabilities are tested by the conditional probability of each model. Then the SVM classifier suitable for the underground environment is constructed, and the filtered clutter signal is further suppressed and separated. The simulation results show the effectiveness of the proposed algorithm.