**Ronghui Zhan \*, Liping Wang and Jun Zhang**

Science and Technology on Automatic Target Recognition Laboratory, National University of Defense Technology, Changsha 410073, Hunan, China; wangliping17@nudt.edu.cn (L.W.); zhangjun@nudt.edu.cn (J.Z.)


Received: 15 February 2020; Accepted: 10 March 2020; Published: 17 March 2020

**Abstract:** This paper deals with joint tracking and classification (JTC) of multiple targets based on scattering center model (SCM) and wideband radar observations. We first introduce an SCM-based JTC method, where the SCM is used to generate the predicted high range resolution profile (HRRP) with the information of the target aspect angle, and target classification is implemented through the data correlation of observed HRRP with predicted HRRPs. To solve the problem of multi-target JTC in the presence of clutter and detection uncertainty, we then integrate the SCM-based JTC method into the CBMeMBer filter framework, and derive a novel SCM-JTC-CBMeMBer filter with Bayesian theory. To further tackle the complex integrals' calculation involved in targets state and class estimation, we finally provide the sequential Monte Carlo (SMC) implementation of the proposed SCM-JTC-CBMeMBer filter. The effectiveness of the presented multi-target JTC method is validated by simulation results under the application scenario of maritime ship surveillance.

**Keywords:** joint tracking and classification; scattering center model; high range resolution profile; CBMeMBer filter; sequential Monte Carlo
