Time Delay Estimation of Ultra-wideband Signals by Calculation of the Cross-Ambiguity Function

2015 ◽  
pp. 851-859 ◽  
Author(s):  
Roman A. Ershov ◽  
Oleg A. Morozov ◽  
Vladimir R. Fidelman
Keyword(s):  
Time Delay ◽  
Time Delay Estimation ◽  
Ambiguity Function ◽  
Ultra Wideband ◽  
Delay Estimation ◽  
Wideband Signals ◽  
The Cross ◽  
Cross Ambiguity Function

scholarly journals Methods for broadband signals mutual time delays estimating enhancement

2019 ◽  
Vol 30 ◽  
pp. 03012
Author(s):  
Ilya Grin ◽  
Oleg Morozov
Keyword(s):  
Time Delay ◽  
Computational Efficiency ◽  
Radiation Source ◽  
Time Delays ◽  
Time Delay Estimation ◽  
Ambiguity Function ◽  
Delay Estimation ◽  
Reliability Criterion ◽  
Optimal Processing ◽  
Narrowband Channels

This paper considers methods for estimating the mutual time delay of broadband signals recorded by satellites based multi-position systems for determining the location of a radiation source. All methods considered are based on modified algorithms for calculating the ambiguity function. The presented algorithms are based on the extraction of narrowband channels from the studied signals and their further optimal processing. The reliability criterion for mutual time delay estimation by the presented methods was evaluated. Based on the results and analysis of computational efficiency, viability of methods considered and their modifications was determined.

scholarly journals Methods for mutual time delay estimation of wideband signals based on nonlinear digital filtering

2019 ◽  
Vol 30 ◽  
pp. 03008
Author(s):  
Roman Ershov ◽  
Oleg Morozov
Keyword(s):  
Time Delay ◽  
Communication Systems ◽  
Satellite Communication ◽  
Signal To Noise Ratio ◽  
Digital Filtering ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
Wideband Signals ◽  
Correlation Processing

Methods for mutual time delay estimation of wideband signals propagating in satellite communication systems are proposed. The signals are propagated in different channels and received with low signal-to-noise ratio. A characteristic feature of satellite channel is the presence of the Doppler Effect, which leads to a shift and scaling the signal spectrums. The proposed approaches are based on the separation of narrow-band channels from the studied signals, using non-linear digital filtering algorithms in each channel, and subsequent optimal (correlation) processing. The accuracy of the proposed methods and the reliability of the determination of time delay are investigated.

Time delay estimation using the cross bispectrum

1992 ◽  
Vol 40 (1) ◽  
pp. 106-113 ◽  
Author(s):  
M.J. Hinich ◽  
G.R. Wilson
Keyword(s):  
Time Delay ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
The Cross
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