TY - GEN
T1 - A Fast Computation Method for Solving Scattering from Complex Objects with Radar Absorbing Honeycomb Structure
AU - Yang, Zeng
AU - Yuan, Xiao Wei
AU - Yang, Ming Lin
AU - Sheng, Xin Qing
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, we present a fast and accurate method for solving electromagnetic scattering from complex objects with honeycomb radar absorbing structures based on the hybrid finite element-boundary integral-multilevel fast multipole algorithm (FE-BI-MLFMA). In this method, the extremely thin walls of the dielectric honeycomb are approximated by the impedance boundary conditions (IBC) and then are reduced to a zero-thickness resistive sheets, thus the main computation burden for computing field interaction with honeycomb structure is eliminated. Then, it is incorporated into the FE-part of the FLBI-MLFMA formulation, with effective high-efficiency finite element-absorption boundary (FEM-ABC) based preconditioner to speed up the solution of the FLBI equations. A series of numerical examples are given to demonstrate the accuracy and performance of the proposed method, including a complicated practical missile-like object involving radar-absorbing honeycomb structures.
AB - In this paper, we present a fast and accurate method for solving electromagnetic scattering from complex objects with honeycomb radar absorbing structures based on the hybrid finite element-boundary integral-multilevel fast multipole algorithm (FE-BI-MLFMA). In this method, the extremely thin walls of the dielectric honeycomb are approximated by the impedance boundary conditions (IBC) and then are reduced to a zero-thickness resistive sheets, thus the main computation burden for computing field interaction with honeycomb structure is eliminated. Then, it is incorporated into the FE-part of the FLBI-MLFMA formulation, with effective high-efficiency finite element-absorption boundary (FEM-ABC) based preconditioner to speed up the solution of the FLBI equations. A series of numerical examples are given to demonstrate the accuracy and performance of the proposed method, including a complicated practical missile-like object involving radar-absorbing honeycomb structures.
UR - http://www.scopus.com/inward/record.url?scp=85126391522&partnerID=8YFLogxK
U2 - 10.1109/PIERS53385.2021.9694913
DO - 10.1109/PIERS53385.2021.9694913
M3 - Conference contribution
AN - SCOPUS:85126391522
T3 - Progress in Electromagnetics Research Symposium
SP - 2400
EP - 2405
BT - 2021 Photonics and Electromagnetics Research Symposium, PIERS 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 Photonics and Electromagnetics Research Symposium, PIERS 2021
Y2 - 21 November 2021 through 25 November 2021
ER -