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| Rough Classification of Air-Target with the Theory of Blind Number |
| Chen Hang-yong; Wei Xi-zhang; Li Xiang; Guo Gui-rong |
Research Institute of Space Electronics Information Technology, National University
of Defense Technology, Changsha 410073，China |
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Abstract This paper first summarizes the difficulty in detecting and identifying helicopter, then analysis the spectrum signature of radar echo signal from helicopter, and estimates the width of the spectrum modulated by helicopter blades. The author uses the width of the spectrum and applies the theory of blind number to a rough classification of helicopter and fixed-wing aircraft. The author provides the result of emulation, and the result proves the effectiveness of theoretic analyses and the algorithm of classification.
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Received: 02 August 2004
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2006, Vol. 28 
