Abstract

A domain decomposition method for analyzing very large FDTD domains, tens of thousands of wavelengths long, is demonstrated by application to the problem of RADAR scattering in the maritime environment. Success depends on the elimination of artificial scattering from the "sky" boundary and this is ensured by an ultra-high performance absorbing termination that eliminates this reflection at angles of incidence from normal down to less than 0.2 degrees off grazing. The results are cross-validated at S-Band by comparison to Method of Moments over a 3.6 km flat conducting plane with an inhomogeneous atmosphere, and at X-Band by comparing to another parabolic equation method on propagation through an inhomogeneous atmosphere over a 4km long sea surface. Details of the method are given for the two-dimensional problem (2D). The same techniques used in 2D are being applied to three dimensions (3D).

Original languageEnglish (US)
Title of host publication2017 IEEE Antennas and Propagation Society International Symposium, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2409-2410
Number of pages2
Volume2017-January
ISBN (Electronic)9781538632840
DOIs
StatePublished - Oct 18 2017
Event2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2017 - San Diego, United States
Duration: Jul 9 2017Jul 14 2017

Other

Other2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2017
CountryUnited States
CitySan Diego
Period7/9/177/14/17

Keywords

  • Domain decomposition
  • FDTD
  • GPU computing
  • RADAR scattering
  • Rough surface scattering

ASJC Scopus subject areas

  • Radiation
  • Computer Networks and Communications
  • Instrumentation

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