Title :
Nutation feature extraction of ballistic missile warhead
Author :
Huixia, S. ; Zheng, Lei
Author_Institution :
Nat. Lab. for Radar Signal Process., Xidian Univ., Xi´an, China
Abstract :
To elucidate nutation signatures, the model of nutation for a ballistic missile warhead is established and formulas of micro-Doppler induced by a target with nutation are derived. Two micro-Doppler features, which are micro-motion period and micro-Doppler bandwidth, are extracted based on high-resolution time-frequency transform. The validity of the features extracted in this reported work is verified by computer simulations even with low signal-to-noise ratio.
Keywords :
Doppler effect; ballistics; feature extraction; missiles; time-frequency analysis; ballistic missile warhead; elucidate nutation signature; feature extraction; high resolution time frequency transform; microDoppler bandwidth; microDoppler feature; micromotion period; nutation feature extraction; nutation model; signal-to-noise ratio;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.0580
