The key of ballistic missile recognition by micro-Doppler is to extract micro-Dopper from wideband radar echo signal.It is the high-speed sampling that results in higher demand of hardware and algorithm.The compressive sensing theory is applied to the extraction of micro-Doppler from wideband radar echo signal.The micro-Doppler formula of ballistic missile targets is derived,and the method of extracting micro-Doppler from wideband radar echo signal via compressive sensing is improved.The micro-Doppler extra...