Acta Photonica Sinica, Volume. 50, Issue 7, 31(2021)
Research on Power-line Interference Removal Method of Ultraviolet Communication Signal Based on Wavelet Transform
Figures & Tables(11)
Fig. 1. The process of removing power-line interference based on wavelet transform
Fig. 3. Calculating SNR of the received UV signal generated from experiments
Fig. 5. The 7th layer approximate coefficient reconstruction map and its spectrum distribution
Fig. 6. SNR after removing power-line interference based on different wavelet basis functions
Fig. 7. SNR after removing power-line interference under different wavelet bases
Fig. 8. UV signal and its spectrum after power-line interference is removed by sym40 wavelet basis
Table 1. Experimental conditions and parameters
View tableView in ArticleTable 1. Experimental conditions and parameters
Parameter Value Experimental temperature/℃ 23.2 Relative humidity/% 62 Pressure/hPa 9 577 Wind speed/（m·s－1） 1 Visibility/km 8 The optical filter efficiency ηf/% 100 The PMT detection quantum efficiency ηd/% 35
Table 2. Transceiver geometric parameters
View tableView in ArticleTable 2. Transceiver geometric parameters
Parameter Value Transmitter's elevation angle θt/（°） 40 Half-beam angle Фt/（°） 15 Off-axis angle of transmitter αt/（°） 0 Receiver's elevation angle θr/（°） 40 Half field-of-view angle Фr/（°） 40 Off-axis angle of receiver αr/（°） 0 Emission power/mW 10 Communication distance d/m 10
Table 3. Spectrum distribution of the received signal
View tableView in ArticleTable 3. Spectrum distribution of the received signal
Power-line interference Power-line interference 1 3 5 7 9 f/Hz 100 200 1 125 3 375 5 625 7 875 10 125
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Peng SONG, Yumei TAN, Xuehua LI, Hua GUO, Lijian ZHANG. Research on Power-line Interference Removal Method of Ultraviolet Communication Signal Based on Wavelet Transform[J]. Acta Photonica Sinica, 2021, 50(7): 31
Paper Information
Category: Fiber Optics and Optical Communications
Received: Dec. 8, 2020
Accepted: Mar. 25, 2021
Published Online: Sep. 1, 2021
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