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Proceedings Paper

A positioning algorithm based on super-resolution time delay estimation in dual Mach-Zehnder interferometry disturbance sensor
Author(s): Qinnan Chen; Tiegen Liu; Kun Liu; Junfeng Jiang; Zhenyang Ding; Liang Pan; Chunyu Ma; Tianjiao Chai; Chang He
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Paper Abstract

A novel positioning algorithm based on super-resolution time delay estimation in dual Mach-Zehnder interferometry disturbance sensor is employed. We first compute the twice correlation function of the two output signal of DMZI by using modified chirp z-transform. Then fine interpolation of correlation peak is adopted to compute waveform of the main correlation peak only using the main segment of the cross power spectrum to improve the resolution of the twice correlation function. At last, in order to enhance the capacity of peak detection, we calculate the difference between the correlation function and its Hilbert transform to sharpen the peak of the correlation function. We have experimentally demonstrated that the proposed positioning algorithm can improve the positioning resolution and accuracy, and it has the potential to accurate positioning in low sampling rate and reduce costs of the system.

Paper Details

Date Published: 11 November 2014
PDF: 7 pages
Proc. SPIE 9274, Advanced Sensor Systems and Applications VI, 92740U (11 November 2014); doi: 10.1117/12.2073398
Show Author Affiliations
Qinnan Chen, Tianjin Univ. (China)
Tiegen Liu, Tianjin Univ. (China)
Kun Liu, Tianjin Univ. (China)
Junfeng Jiang, Tianjin Univ. (China)
Zhenyang Ding, Tianjin Univ. (China)
Liang Pan, Tianjin Univ. (China)
Chunyu Ma, Tianjin Univ. (China)
Tianjiao Chai, Tianjin Univ. (China)
Chang He, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 9274:
Advanced Sensor Systems and Applications VI
Tiegen Liu; Shibin Jiang; Niels Neumann, Editor(s)

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