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Article: ASYMPTOTIC APPROXIMATION OF WAVES DUE TO A DIPOLE ON A TWOLAYER MEDIUM.
Title  ASYMPTOTIC APPROXIMATION OF WAVES DUE TO A DIPOLE ON A TWOLAYER MEDIUM. 

Authors  
Issue Date  1982 
Citation  Radio Science, 1982, v. 17 n. 3, p. 509513 How to Cite? 
Abstract  The TM wave due to a horizontal magnetic dipole is first expanded in terms of a series of integrals, each of which is interpreted as due to an image source. Each of the image source integrals possesses a branch point and a highorder pole which can be close to the saddle point. To facilitate uniform asymptotic approximation, the branch point is first removed by a transformation, which results in an integral with a highorder pole near three saddle points. The uniform asymptotic approximation of such an integral is obtained through the use of the generalized Weber's function. The result agrees with numerical integration much better than the geometrical optics approximations (GOA). 
Persistent Identifier  http://hdl.handle.net/10722/182462 
ISSN  2021 Impact Factor: 1.678 2020 SCImago Journal Rankings: 0.371 
DC Field  Value  Language 

dc.contributor.author  Chew, WC  en_US 
dc.contributor.author  Kong, JA  en_US 
dc.date.accessioned  20130502T05:15:28Z   
dc.date.available  20130502T05:15:28Z   
dc.date.issued  1982  en_US 
dc.identifier.citation  Radio Science, 1982, v. 17 n. 3, p. 509513  en_US 
dc.identifier.issn  00486604  en_US 
dc.identifier.uri  http://hdl.handle.net/10722/182462   
dc.description.abstract  The TM wave due to a horizontal magnetic dipole is first expanded in terms of a series of integrals, each of which is interpreted as due to an image source. Each of the image source integrals possesses a branch point and a highorder pole which can be close to the saddle point. To facilitate uniform asymptotic approximation, the branch point is first removed by a transformation, which results in an integral with a highorder pole near three saddle points. The uniform asymptotic approximation of such an integral is obtained through the use of the generalized Weber's function. The result agrees with numerical integration much better than the geometrical optics approximations (GOA).  en_US 
dc.language  eng  en_US 
dc.relation.ispartof  Radio Science  en_US 
dc.title  ASYMPTOTIC APPROXIMATION OF WAVES DUE TO A DIPOLE ON A TWOLAYER MEDIUM.  en_US 
dc.type  Article  en_US 
dc.identifier.email  Chew, WC: wcchew@hku.hk  en_US 
dc.identifier.authority  Chew, WC=rp00656  en_US 
dc.description.nature  link_to_subscribed_fulltext  en_US 
dc.identifier.scopus  eid_2s2.00020127179  en_US 
dc.identifier.volume  17  en_US 
dc.identifier.issue  3  en_US 
dc.identifier.spage  509  en_US 
dc.identifier.epage  513  en_US 
dc.publisher.place  United States  en_US 
dc.identifier.scopusauthorid  Chew, WC=36014436300  en_US 
dc.identifier.scopusauthorid  Kong, JA=7202290923  en_US 
dc.identifier.issnl  00486604   