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

Fingerprint

finite difference time domain method
radar
oceans
Radar
Scattering
Domain decomposition methods
atmospheres
S band
propagation
method of moments
grazing
Method of moments
superhigh frequencies
scattering
sky
elimination
simulation
incidence
decomposition
conduction

Keywords

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

ASJC Scopus subject areas

  • Radiation
  • Computer Networks and Communications
  • Instrumentation

Cite this

Dowd, B., & Diaz, R. (2017). FDTD simulation of very large domains applied to radar propagation over the ocean. In 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings (Vol. 2017-January, pp. 2409-2410). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APUSNCURSINRSM.2017.8073247

FDTD simulation of very large domains applied to radar propagation over the ocean. / Dowd, Brandon; Diaz, Rodolfo.

2017 IEEE Antennas and Propagation Society International Symposium, Proceedings. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017. p. 2409-2410.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dowd, B & Diaz, R 2017, FDTD simulation of very large domains applied to radar propagation over the ocean. in 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings. vol. 2017-January, Institute of Electrical and Electronics Engineers Inc., pp. 2409-2410, 2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2017, San Diego, United States, 7/9/17. https://doi.org/10.1109/APUSNCURSINRSM.2017.8073247
Dowd B, Diaz R. FDTD simulation of very large domains applied to radar propagation over the ocean. In 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings. Vol. 2017-January. Institute of Electrical and Electronics Engineers Inc. 2017. p. 2409-2410 https://doi.org/10.1109/APUSNCURSINRSM.2017.8073247
Dowd, Brandon ; Diaz, Rodolfo. / FDTD simulation of very large domains applied to radar propagation over the ocean. 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017. pp. 2409-2410
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