A Track-before-Detect Algorithm for Tracking Extended Targets Based on Particle Filter

Based on track-before-detect algorithm,Particle Filtering(PF) was used to track and detect the extended targets.Target intensity and target length were introduced into the state vector to restrain the divergence of PF and realize effective tracking and detection of extended targets.The target intensity and target length were estimated on the basis of the available detection.Simulations illustrated that the algorithm can track and detect extended targets,and estimate the intensity and length of the targets effectively.