Comparison of Three Major MOM Codes for a Large Wire-Grid Ship Model
Keith A. Lysiak
Tactical Systems Department, Signal Exploitation and Geolocation Division, Southwest Research Institute, Texas, USA
A comparison is made between three prominent Method of Moment (MoM) codes using a wire mesh model of a large naval ship. Although wire mesh models of large surface structures have been extensively replaced with solid surface modeling, they still prove to be quite accurate especially when using NEC. Likewise NEC is often looked at as obsolete but still proves to be the most cost effective and computationally efficient MoM code available even when compared to surface mesh models. This model contains 8031 wire segments. 93,600 complex response measurements from a corresponding brass scale model provide an extensive evaluation case. Of primary interest is the performance of these three codes, GNEC™, FEKO, and WIPL-D in light of there derivation and basis functions. The complexity of the basis function does not necessarily equate to better performance.
24th Annual Review of Progress in Applied Computational Electromagnetics
2008
April
341-347
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