Two-Dimensional Far Field Source Locating Method with Nonprior Velocity
Joint Authors
Chen, Qing
Liu, Xiaowen
Li, Juanjuan
Wang, Manyi
Liu, Peng
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-04-26
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Relative position of seismic source and sensors has great influence on locating accuracy, particularly in far field conditions, and the accuracy will decrease seriously due to limited calculation precision and prior velocity error.
In order to improve the locating accuracy of far field sources by isometric placed sensors in a straight line, a new locating method with nonprior velocity is proposed.
After exhaustive research, this paper states that the hyperbola which is used for locating will be very close to its asymptote when seismic source locates in far field of sensors; therefore, the locating problem with prior velocity is equivalent to solving linear equations and the problem with nonprior velocity is equivalent to a nonlinear optimization problem with respect to the unknown velocity.
And then, this paper proposed a new locating method based on a one-variable objective function with respect to the unknown velocity.
Numerical experiments show that the proposed method has faster convergence speed, higher accuracy, and better stability.
American Psychological Association (APA)
Chen, Qing& Liu, Xiaowen& Li, Juanjuan& Wang, Manyi& Liu, Peng. 2016. Two-Dimensional Far Field Source Locating Method with Nonprior Velocity. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-14.
https://search.emarefa.net/detail/BIM-1112734
Modern Language Association (MLA)
Chen, Qing…[et al.]. Two-Dimensional Far Field Source Locating Method with Nonprior Velocity. Mathematical Problems in Engineering No. 2016 (2016), pp.1-14.
https://search.emarefa.net/detail/BIM-1112734
American Medical Association (AMA)
Chen, Qing& Liu, Xiaowen& Li, Juanjuan& Wang, Manyi& Liu, Peng. Two-Dimensional Far Field Source Locating Method with Nonprior Velocity. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-14.
https://search.emarefa.net/detail/BIM-1112734
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1112734