Efficient technique for broadband monostatic RCS using the characteristic basis function method with polynomial interpolation

Chen, Xinlei; Chao, Fei; Gu, Changzhi; Mittra, R.

doi:10.1049/el.2017.1016

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…[14], the SVD technology is applied to enhance the computation efficiency of UCBFs. The polynomial interpolation technology combined with UCBFM is also presented in one of the relevant studies, to accelerate the reduced matrix construction 15 . However, all above‐mentioned methods have to resort to the external excitation source for constructing the UCBFs, the number of UCBFs is usually large for the increasing size of target, which inherently increases the size of reduced matrix.…”

Section: Introductionmentioning

confidence: 99%

Fast analysis of wideband scattering problems using universal characteristic mode basis functions

Wang

Sun

et al. 2022

Micro & Optical Tech Letters

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The ultra‐wideband characteristic basis function method (UCBFM) is known as an effective technique for analyzing the wideband scattering problems, where the ultra‐wideband characteristic basis functions (UCBFs) can be reused for any sampling frequency in the range of interest. However, these UCBFs need to be constructed via an external excitation source, and the number of UCBFs is generally large for the increasing size of target, which leads to an increased size of the reduced matrix. To mitigate these problems, a universal characteristic mode basis function method (UCMBFM) is proposed in this study. Unlike the existing UCBFM, the construction of universal characteristic mode basis functions (UCMBFs) proposed in this study are only dependent on the impedance matrix, which is essentially determined by the material and shape of objects. Therefore, these UCMBFs are independent of frequency and can be reused at lower frequency band. Moreover, in proposed scheme, the number of UCMBFs and the size of reduced matrix are both less, when compared to traditional UCBFM. Finally, the corresponding numerical results demonstrate that efficiency and accuracy can be achieved by the proposed method.

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Section: Introductionmentioning

confidence: 99%

Fast analysis of wideband scattering problems using universal characteristic mode basis functions

Wang

Sun

et al. 2022

Micro & Optical Tech Letters

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“…Several efficient frequency sweep techniques have been proposed, i.e., the interpolation [12]- [14], the asymptotic waveform estimation (AWE) [15], the frequency-independent reaction (FIR) [16], etc. For the interpolation, the matrix elements must vary slowly with frequency.…”

Section: Introductionmentioning

confidence: 99%

“…To this end, the wide band usually has to be divided into several subbands. In [14], the wide scattering was analyzed by using the CBFM and the interpolation. In [17], the ASED basis function was combined with the interpolation to analyze the electromagnetic scattering by the finite periodic arrays.…”

Section: Introductionmentioning

confidence: 99%

Fast Wideband Monostatic Scattering Analysis Method Combining Macro-Block Characteristic Basis Function Method With Improved FIR for Freestanding Large-Scale Finite Periodic Arrays

Qing

Zheng

et al. 2021

IEEE Access

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An efficient numerical method for the wideband scattering analysis of the freestanding large-scale finite periodic array is presented using the macro block-characteristic basis function method (MB-CBFM) and the improved frequency-independent reaction (FIR). In the MB-CBFM, the blocks (unit cells) are divided into some types of macro blocks. By analyzing the subarray with the macro blocks, the CBFs for the macro blocks will be obtained. The blocks in the same macro block share the same CBFs. Substituting the CBFs into the moment matrix equation, a reduced matrix equation whose size does not depend on the number of the blocks can be obtained and handled utilizing direct methods. When the MB-CBFM is applied for wideband analysis, the matrix needs to be recomputed. The reduced matrix can be efficiently generated by using the improved FIR, in which the matrix elements are expressed as the product of the geometrical elements and the phase factor. The geometrical elements are computed one time and reused. Only the phase factor needs to be recomputed. Several numerical examples are carried out. Simulation results show that the results of the proposed algorithm agree well with those of other numerical methods. The total CPU time is significantly reduced. INDEX TERMSFinite periodic array, macro block-characteristic basis function, improved frequency-independent reaction, scattering, wideband.

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Novel spatial and temporal interpolation algorithms based on extended field intensity model with applications for sparse AQI

Cai

Shi

Zhao

2021

Multimed Tools Appl

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Efficient technique for broadband monostatic RCS using the characteristic basis function method with polynomial interpolation

Cited by 9 publications

References 8 publications

Fast analysis of wideband scattering problems using universal characteristic mode basis functions

Fast analysis of wideband scattering problems using universal characteristic mode basis functions

Fast Wideband Monostatic Scattering Analysis Method Combining Macro-Block Characteristic Basis Function Method With Improved FIR for Freestanding Large-Scale Finite Periodic Arrays

Novel spatial and temporal interpolation algorithms based on extended field intensity model with applications for sparse AQI

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