The reunite effect eliminating using dynamic programming in track before detect algorithm based on passive millimeter waves

In this paper, we analyze the traditional theory of dynamic programming in Tracking Before Detecting(TBD) algorithm based on passive millimeter waves. We point out that a nature defect occurs when using traditional TBD algorithm which we call it the reunite effect. To solve this problem we propose a improved algorithm using a reversed detecting way to eliminate the reunite effect. The simulation shows the improved algorithm dose well in detecting dim point target and we give the performance analysis of the false alarm probability and the detection probability.