Abstract: Aiming at the spinning-precession features of a ballistic missile warhead,a model of spinning-precession for the ballistic missile warhead is established,and the mathematics of micro-Doppler signatures caused by spinning-precession is derived.Then the micro-Doppler features are analyzed by using high-resolution time-frequency transform,and the validity of the model is verified by computer simulations.The feature which can reflect the mass of the target is extracted from the time-frequency plane,thus a new method is provided for recognizing such targets.Finally the validity of the feature extracted in this paper is verified by computer simulations even with low SNR.