Design of Lock-In Amplifier Based on Down-Sampling Mean Filter

Wen Tao Guan; Zhao Hua Yang; Yu Peng Cao

doi:10.4028/www.scientific.net/AMM.543-547.662

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 543-547Design of Lock-In Amplifier Based on Down-Sampling...

Design of Lock-In Amplifier Based on Down-Sampling Mean Filter

Abstract:

Low-pass filter is an integral part of lock-in amplifier, low-pass FIR or IIR filter is typically used in lock-in amplifier, which need a large number of multiplications and occupy more hardware resources. To reduce cross-correlation computing requirement of multiplications, this paper, designed orthogonal vector lock-in amplifier based on the down-sampling dual mean filter. Experiments show that, the digital amplifier has good detection performance and noise or clutter suppression. Keywords: lock-in amplifier, mean filter, down-sampling, Gaussian noise suppression, clutter suppression.

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Periodical:

Applied Mechanics and Materials (Volumes 543-547)

Pages:

662-667

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.543-547.662

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Online since:

March 2014

Authors:

Wen Tao Guan, Zhao Hua Yang*, Yu Peng Cao

Keywords:

Clutter Suppression, Down-Sampling, Gaussian Noise Suppression, Lock-In Amplifier, Mean Filter

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* - Corresponding Author

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