Detection of small target which is embeded in a dominant clutter background is a crucial technology for searching and tracking systems. In order to extract object in low SNR condition, Track before Detect (TbD) technology is proposed.

• 为在低信噪比、强杂波的环境下提取目标 ,人们提出了跟踪置前检测 (TbD)的小目标检测方法。