Effect of Noise on Phase Spectrum Time-Delay Estimation Method

Abstract:

The phase spectrum time delay estimation (TDE) method is being used widely in trajectory tracking and target location, which due to its superiority in computation load and accuracy. However, the precision of TDE had declined severely as the result of noise. This paper plans to analyze the factor of noise, which has effects on the performance of phase spectrum TDE algorithm based on the difference principle. Theoretical analysis and computer simulation show that the fluctuation of phase caused by noise leads to poor performance. Furthermore, the extent of the influence relates to the time delay and signal frequency.

• Periodical: Applied Mechanics and Materials (Volume 610)
• Pages: 862-866
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.610.862
• Online since: August 2014
• Authors: Lei Lei Deng
• Keywords: Difference Principle, Phase Spectrum, Time Delay Estimation

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