Acta Photonica Sinica, Volume. 43, Issue 2, 206003(2014)
An Improved Algorithm of PGC Demodulation Method Based on Fundamental Frequency Mixing
An improved fundamental frequency mixing phase generated carrier demodulation algorithm was proposed. By introducing a direct current filter, the improved algorithm could overcome the limitation that the traditional fundamental frequency mixing phase generated carrier demodulation algorithm was only suitable for small-signal. The improved algorithm retained the useful components of the interference signal and reduced the sampling frequency of the system by introducing an anti-aliasing filter. The up-limit amplitude of the demodulated signal was maximized when the sampling frequency was fixed. And the hardware implementation scheme to realize the improved algorithm was presented. Simulations were carried on the Matlab platform and the digital signal processor simulation platform code composer studio prove the feasibility of the improved algorithm.
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ZHANG Ai-ling, WANG Yan, GONG Ming-ju, HAO Bin, WANG Kai-han. An Improved Algorithm of PGC Demodulation Method Based on Fundamental Frequency Mixing[J]. Acta Photonica Sinica, 2014, 43(2): 206003
Received: May. 22, 2013
Accepted: --
Published Online: Feb. 18, 2014
The Author Email: Ai-ling ZHANG (alzhang2012@163.com)