The Performance Correlation Hilbert Time-Delay Estimation for Passive Detection

Feng Wang; Mei Quan Liu; Jiang Wei Fan

doi:10.4028/www.scientific.net/AMM.602-605.1768

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 602-605The Performance Correlation Hilbert Time-Delay...

The Performance Correlation Hilbert Time-Delay Estimation for Passive Detection

Abstract:

Passive time difference detection method is distance, high speed and good concealment which has broad military application prospects. One of the key technologies for passive detection is to extract the time lag through effective signal processing. Relevant method is the most basic method to estimate the time difference and is the basic theory of all correlative time-delay estimation algorithms. The method is simple. But good results rely on the spectrum characteristics of signal and noise is ideal. Time delay estimation based on Hilbert transform is the expansion of the generalized correlation time-delay estimation method which changes the correlation function from accidentally symmetry into odd symmetry. Detecting correlation peak is converted into zero crossing detection. The method sharps the main peak value point and improved the precision of time delay estimation which gets better time-delay estimation performance in the narrowband signal.

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Periodical:

Applied Mechanics and Materials (Volumes 602-605)

Pages:

1768-1771

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.602-605.1768

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Online since:

August 2014

Authors:

Feng Wang*, Mei Quan Liu, Jiang Wei Fan

Keywords:

Correlation, Hilbert, Performance Analyzing, Time-Delay Estimation

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* - Corresponding Author

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