The difficulties of dim target detection are analyzed in the paper. The performances of DBT and TBD are compared,and the theory of TBD are analyzed. The main methods of TBD are summarized.

• 文中分析了低信噪比复杂背景中红外弱小目标检测与跟踪的难点,比较了DBT与TBD两种检测与跟踪算法的性能,分析了TBD的检测机理,总结了典型的TBD方法,展望了TBD的发展。