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Volume 30 Issue 9
Jan.  2011
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Luo Ying, Chi Long, Zhang Qun, Guo Ying. Extraction of Micro-Doppler Information Based on Slow-time Integration[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2055-2059. doi: 10.3724/SP.J.1146.2007.00176
Citation: Luo Ying, Chi Long, Zhang Qun, Guo Ying. Extraction of Micro-Doppler Information Based on Slow-time Integration[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2055-2059. doi: 10.3724/SP.J.1146.2007.00176

Extraction of Micro-Doppler Information Based on Slow-time Integration

doi: 10.3724/SP.J.1146.2007.00176
  • Received Date: 2007-01-29
  • Rev Recd Date: 2008-04-17
  • Publish Date: 2008-09-19
  • The micro-Doppler effect may be generated by additional frequency modulations on the returned radar signal, if the target contains rotating structures, such as a rotor on a helicopter. The body image will be contaminated duo to the existence of the micro-Doppler. In the paper, a simple method based on integral of slow-time is introduced, which has separated the signal from the body of target and that from the rotating parts successfully. It makes the ISAR image clearer, and also provides some information of the rotating parts, such as the radius and the rotation frequency. Finally, a computer simulation is given to prove the effectiveness of the method, and the performances of extraction of micro-Doppler spectrogram in the condition of different SNR are also discussed.
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