Particle filter for multipath time delay tracking from correlation functions in deep water

2018 ◽  
Vol 144 (1) ◽  
pp. 397-411 ◽  
Author(s):  
Rui Duan ◽  
Kunde Yang ◽  
Feiyun Wu ◽  
Yuanliang Ma
Keyword(s):  
Time Delay ◽  
Particle Filter ◽  
Deep Water ◽  
Correlation Functions

scholarly journals Underwater Acoustic Time Delay Estimation Based on Envelope Differences of Correlation Functions

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1259 ◽  
Author(s):  
Guodong Li ◽  
Jinsong Wu ◽  
Taolin Tang ◽  
Zhixin Chen ◽  
Jun Chen ◽  
...  
Keyword(s):  
Time Delay ◽  
Correlation Functions ◽  
Estimation Method ◽  
Digital Signal ◽  
Low Complexity ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
Estimation Errors ◽  
Underwater Acoustic ◽  
Amplitude Fluctuations

This paper proposes underwater acoustic time delay estimation based on the envelope differences of correlation functions (EDCF), which mitigates the delay estimation errors introduced by the amplitude fluctuations of the correlation function envelopes in the traditional correlation methods (CM). The performance of the proposed delay estimation method under different time values was analyzed, and the optimal difference time values are given. To overcome the influences of digital signal sampling intervals on time delay estimation, a digital time delay estimation approach with low complexity and high accuracy is proposed. The performance of the proposed time delay estimation was analyzed in underwater multipath channels. Finally, the accuracy of the delay estimation using this proposed method was demonstrated by experiments.

Particle filter with Markovian packet dropout and time delay

2019 ◽  
Vol 356 (1) ◽  
pp. 675-696 ◽  
Author(s):  
Chen Yang ◽  
Huajing Fang ◽  
Bing Shi
Keyword(s):  
Time Delay ◽  
Particle Filter ◽  
Packet Dropout
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