Chinese Optics, Volume. 16, Issue 3, 682(2023)
Phase-extracting method of optical frequency scanning interference signals based on the CEEMD-HT algorithm
Fig. 2. Schematic diagram of the interferometric phase decomposition
Fig. 3. Schematic diagram of the EMD decomposition and reconstruction of the non-stationary interference signal
Fig. 5. Schematic diagram of the decomposition and reconstruction of the interference signal via CEEMD
Fig. 7. Comparison of simulation results of single cycle phase difference extraction
Fig. 8. Comparison of the ranging simulation results of different phase extracting methods
Fig. 10. Comparison of measured interference signal processing results
Table 1. [in Chinese]
View tableView in ArticleTable 1. [in Chinese]
Parameters Parameter name Value/unit a Interference signal amplitude 1 V ${\upsilon _0}$ ECDL initial optical frequency 0 Hz $\Delta \upsilon $ Optical frequency scanning range 2 THz L Measured distance 10 m n Air refractive index 1 c Velocity of light 3×108 m/s t Scan cycle 5 s SNR Signal to noise ratio of interference signal 25, 20, 15, 10 dB S Interference signal sampling frequency 10 MHz
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Ke-yuan YANG, Zhong-wen DENG, Wen-jun CHEN, Xin YAO, Hai-feng SUN, Li-rong SHEN. Phase-extracting method of optical frequency scanning interference signals based on the CEEMD-HT algorithm[J]. Chinese Optics, 2023, 16(3): 682
Category: Original Article
Received: Jul. 27, 2022
Accepted: --
Published Online: May. 31, 2023
The Author Email: Zhong-wen DENG (zwdeng@xidian.edu.cn)
