To elucidate the spinning signatures of ballistic missile warhead,the model of spinning motion for ballistic missile warhead is established and the mathematical formulas for micro-Doppler signatures caused by spinning motion is derived.Then the time-varying micro-Doppler signatures are analysed with high-resolution time- frequency transform,and the micro-Doppler frequency is calculated based on time-frequency distribution.Finally the computer simulation confirms theoretical analysis, providing theoretical foundation for warheads recognition by micro-Doppler signatures.
展开▼
