scholarly journals Passive Source Localization of Sensor Arrays

Sensor Array ◽  
10.5772/35622 ◽  
2012 ◽  
Author(s):  
Junli Liang ◽  
Ding Liu
Keyword(s):  
Source Localization ◽  
Sensor Arrays ◽  
Passive Source Localization

scholarly journals Flipped parameter technique applied on source localization in energy constraint sensor arrays

2009 ◽  
Vol 7 (1) ◽  
pp. 7-22
Author(s):  
Vlastimir Pavlovic ◽  
Zoran Velickovic
Keyword(s):  
Time Delay ◽  
Source Localization ◽  
Cross Correlation ◽  
Sensor Arrays ◽  
Time Delay Estimation ◽  
Peak Time ◽  
Coherent Signals ◽  
Distributed Sensor ◽  
Passive Source Localization ◽  
Single Sensor

In this paper novel flipped parameter technique (FPT) for time delay estimation (TDE) in source localization problem is described. We propose passive source localization technique based on the development of an energy efficient algorithm that can reduce intersensor and interarray communication. We propose a flipped parameter (FP) which can be defined for any sensor in distributed sensor subarrays during the observation period. Unlike classical TDE methods that evaluate cross-correlation function, FPT requires evaluation based upon single sensor signal. The computed cross correlation between a signal and its analytic 'flipped' pair (flipped correlation) is a smooth function which peak (time delay) can be accurately detected. Flipped parameters are sufficient to determine all differential delays of the signals related to the same source. The flipped parameter technique can be used successfully in two-step methods of passive source localization with significantly less energy in comparison to the classic cross correlation. The use of FPT method is especially significant for the energy constrain distributed sensor subarrays. Using synthetic seismic signals, we illustrate the error of the source localization for classical and proposed method in the presence of noise. We demonstrate the performance improvement in noise environment of the proposed technique in comparison to the classic methods that use real signals. The proposed technique gives accurate results for both coherent and non-coherent signals.

TDOA and RSSD Based Hybrid Passive Source Localization with Unknown Transmit Power

2018 ◽  
Vol 66 (4) ◽  
pp. 533-545
Author(s):  
Zengfeng Wang ◽  
Hao Zhang ◽  
Tingting Lu ◽  
Xing Liu ◽  
Zhaoqiang Wei ◽  
...  
Keyword(s):  
Source Localization ◽  
Transmit Power ◽  
Passive Source Localization

Rapid localization of acoustic source using sensor clusters in 3D homogeneous and heterogeneous structures

2020 ◽  
pp. 147592172094519
Author(s):  
Shenxin Yin ◽  
Huapan Xiao ◽  
Zhiwen Cui ◽  
Tribikram Kundu
Keyword(s):  
Source Localization ◽  
Heterogeneous Media ◽  
Sensor Arrays ◽  
Heterogeneous Structure ◽  
Acoustic Source ◽  
Unknown Parameters ◽  
Localization Technique ◽  
3D Structures ◽  
Acoustic Source Localization ◽  
Heterogeneous Structures

The acoustic source localization in 3D structures is a challenging task especially if the structure is heterogeneous. A large number of unknown parameters in a 3D heterogeneous structure require a large number of sensor arrays for accurate source localization. In this article, a localization technique is proposed using triangular pyramid shaped sensor clusters. The time difference of arrival of acoustic signals between different sensors of the clusters is analyzed to localize the acoustic source. It uses acoustic wave propagation information to rapidly localize the acoustic source. This rapid acoustic source localization technique works well for both homogeneous and heterogeneous media. It considers the refraction in heterogeneous media using Snell’s law. The proposed technique is verified experimentally and numerically. The experimental results show that the technique is effective for source localization in 3D homogeneous structures. Numerical results are generated by finite element modeling for both homogeneous and heterogeneous structures. The results show the reliability of the proposed technique. This technique helps to localize the acoustic source with only a few sensors and is indispensable for monitoring large 3D structures with monitoring equipment that can handle only a few sensors.

Optimal passive source localization in a fluctuating ocean waveguide based on an analytic model for the mean field and covariance

2004 ◽  
Vol 115 (5) ◽  
pp. 2473-2473 ◽  
Author(s):  
Purnima Ratilal ◽  
Ioannis Bertsatos ◽  
Tianrun Chen ◽  
Michele Zanolin ◽  
Nicholas C. Makris
Keyword(s):  
Source Localization ◽  
Mean Field ◽  
Analytic Model ◽  
Passive Source Localization ◽  
The Mean
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