Abstract: A power dynamic control method based on weak-sensitivity interactive multiple power( WSIMP ) is proposed to solve the problem of unstable tracking performance caused by drastic power changes in current power dynamic control methods for target tracking under suppressive jamming. Firstly, the influencing factors of power control for target tracking under suppressive jamming are analyzed, and a power optimization model is established under the condition that the parameters of the electronic reconnaissance receiver( ERR ) are unknown. Then, a power dynamic estimation framework is designed to estimate the power based on the interaction information of power levels which are indicated by different echo pulse sequences, and the estimation results are modified by incorporating the target motion state, which effectively addresses the issue of unstable power change caused by the sudden change of target state and the occurrence of suppressive jamming during target tracking. Finally, simulations are conducted in a typical maneuvering target tracking scenario. The simulation results demonstrate that, compared with the current interactive multiple power algorithm, the proposed method makes the radar transmit power adjustment more stable and significantly improves the target tracking accuracy under suppressive jamming.