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Cross code comparison between NEC 4 and transmission line matrix (TLM) methods for whole ship modelling
Author(s) -
Kazik John J.
Publication year - 2001
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.407
Subject(s) - transmission line , transmission line matrix method , computer science , electric power transmission , range (aeronautics) , code (set theory) , matrix (chemical analysis) , antenna (radio) , electronic engineering , line (geometry) , electrical engineering , engineering , computational electromagnetics , telecommunications , physics , mathematics , set (abstract data type) , aerospace engineering , programming language , materials science , geometry , quantum mechanics , electromagnetic field , composite material
This paper describes the application of transmission line matrix methods (TLM) as a possible alternative technique to NEC for the modelling of the electromagnetic environment found on board typical ship topsides. It presents the results of an initial feasibility study demonstrating that TLM can produce similar results to an equivalent NEC model. It then demonstrates the results of an initial and refined ship model, where TLM required a single day for the same frequency range and output as the equivalent NEC model, requiring more than 15 days. The paper presents initial results comparing antenna impedance and radiation patterns as determined by both methods. The paper also demonstrates the capability of the TLM technique to assess complex objects with only the power of a typical commercially available desktop PC. © Crown copyright 2001. Reproduced with the permission of Her Majesty's Stationery Office. Published by John Wiley & Sons, Ltd.