Journal
IEEE SIGNAL PROCESSING LETTERS
Volume 25, Issue 9, Pages 1413-1417Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSP.2018.2858018
Keywords
Instantaneous rotating operator (IRO); self-tuning demodulated operator (SDO); synchro-compensating chirplet transform (SCCT); time-frequency representation (TFR)
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Funding
- National Natural Science Foundation of China [61471309, 61671394]
- Fundamental Research Funds for the Central Universities [20720170044]
- Science and Technology Program of Shenzhen, China [JSGG20170414090428464]
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The novel time-frequency transform, called synchro-compensating chirplet transform, is proposed to represent optimally the overlapping signals in a time-frequency domain. By the control of the self-tuning demodulated operator, an instantaneous rotating operator is introduced in the proposed algorithm to blur the noise and compensate the energy of each component simultaneously. The effectiveness of the method for micro-Doppler signals with a high noise is validated through examples.
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