Numerical study of source localization with non-line-of-sight effects based on time difference of arrival method

2015 ◽  
Author(s):  
Mengna Yang ◽  
David R. Jackson ◽  
Ji Chen ◽  
Zubiao Xiong ◽  
Jeffery T. Williams
Keyword(s):  
Source Localization ◽  
Numerical Study ◽  
Time Difference ◽  
Line Of Sight ◽  
Time Difference Of Arrival ◽  
Non Line Of Sight

scholarly journals A time difference of arrival/angle of arrival fusion algorithm with steepest descent algorithm for indoor non-line-of-sight locationing

2019 ◽  
Vol 15 (9) ◽  
pp. 155014771986035 ◽  
Author(s):  
Chong Shen ◽  
Chengxiao Wang ◽  
Kun Zhang ◽  
Xianpeng Wang ◽  
Jing Liu
Keyword(s):  
Steepest Descent ◽  
Time Difference ◽  
Line Of Sight ◽  
Angle Of Arrival ◽  
Fusion Algorithm ◽  
Time Difference Of Arrival ◽  
Positioning Accuracy ◽  
Descent Algorithm ◽  
Steepest Descent Algorithm ◽  
Non Line Of Sight

In complex indoor propagation environment, the non-line-of-sight error caused by various obstacles brings great error to node positioning. Choosing the appropriate signal transmission methods is important to improve node indoor positioning accuracy. In this research, ultra-wideband technology, as baseband with high theoretical positioning accuracy and real-time performance, is implemented to transmit indoor signals. The proposed fusion algorithm with ultra-wideband baseband takes advantages from both time difference of arrival and angle of arrival algorithms, combined through the steepest descent algorithm. The non-line-of-sight signal estimation error is iteratively eliminated to achieve effective positioning accuracy. The experimental results indicate that the novel time difference of arrival/angle of arrival fusion algorithm with steepest descent algorithm can largely improve node positioning accuracy and stability.

Non-line-of-sight sound source localization using matched-field processing

2012 ◽  
Vol 131 (1) ◽  
pp. 292-302 ◽  
Author(s):  
Victor Singh ◽  
Katherine E. Knisely ◽  
Serdar H. Yönak ◽  
Karl Grosh ◽  
David R. Dowling
Keyword(s):  
Source Localization ◽  
Sound Source ◽  
Sound Source Localization ◽  
Line Of Sight ◽  
Matched Field Processing ◽  
Non Line Of Sight
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