Laser & Optoelectronics Progress, Volume. 58, Issue 23, 2306002(2021)
Undersampling Digital Orthogonal Demodulation Method for Heterodyne Interference System
Figures & Tables(7)
Fig. 5. Demodulation results at different sampling frequencies. (a) 200 MHz; (b) 20 kHz; (c) 10 kHz; (d) 5 kHz
Table 1. Demodulation results at different sampling frequencies
View tableTable 1. Demodulation results at different sampling frequencies
Sampling frequency Heterodyne frequency /MHz Average demodulation phase /rad Error /% 200 MHz 80.00000 0.9011 - 10 MHz 82.50000 0.9016 0.2 1 MHz 80.25000 0.9032 0.1 100 kHz 80.02500 0.9028 0.2 50 kHz 80.01250 0.9004 0.1 40 kHz 80.01000 0.9036 0.3 20 kHz 80.00500 0.8982 0.3 10 kHz 80.00250 0.8366 7.0 5 kHz 80.00125 0.7303 18.0
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Jie Ma, Min Li, Lü Haifei, Hongyun Gao, Xiaoyan Wen, Kai Su. Undersampling Digital Orthogonal Demodulation Method for Heterodyne Interference System[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2306002
Paper Information
Category: Fiber Optics and Optical Communications
Received: Jan. 7, 2021
Accepted: Mar. 23, 2021
Published Online: Nov. 18, 2021
The Author Email: Wen Xiaoyan (wenxy@whut.edu.cn)
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