Zhaoyong Wang, Zhengqing Pan, Qing Ye, Bin Lu, Zujie Fang, Haiwen Cai, Ronghui Qu. Novel distributed passive vehicle tracking technology using phase sensitive optical time domain reflectometer[J]. Chinese Optics Letters, 2015, 13(10): 100603
- Chinese Optics Letters
- Vol. 13, Issue 10, 100603 (2015)
Fig. 1. (a) Experimental setup of Φ
Fig. 2. Original waterfall pattern.
Fig. 3. DFSI pattern at the moment of the 10th second.
Fig. 4. Short period frequency spectra at positions (a) with and (b) without cars running.
Fig. 5. DFSI processed signal, integrated over (a) 20–100, (b) 30–100, (c) 40–100, (d) 50–100, and (e) 60–100 Hz, compared with the original detected signal (f); (g) signals, ground noise, the fluctuation of noise and FR for frequency integration ranges above.
Fig. 6. DFSI processed waterfall pattern.
Fig. 7. 2D digital sliding filtering processed waterfall pattern.
Fig. 8. Waterfall detected for four cars running successively.
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Table 1. FRs in Different Processing Situations
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