DOAJ Open Access 2020

The Efficient Method for Calculating the Physical Optics Scattered Fields from the Concave Surfaces

Yu Mao Wu Hanzhang Zhou Ya-Qiu Jin Jun Hu Haijing Zhou +1 lainnya

Abstrak

In this work, the numerical steepest descent path (NSDP) method is proposed to compute the highly oscillatory physical optics (PO) scattered fields from the concave surfaces, including both the monostatic and the bistatic cases. Quadratic variations are adopted to approximate the integrands of the PO type integral into the canonical form. Then, on involving the NSDP method, we deform the integration paths of the integrals into several NSDPs on the complex plain, through which the highly oscillatory integrands are converted to exponentially decay integrands. The RCS results of the PO scattered field are calculated and are compared with the high frequency asymptotic (HFA) method and the brute force (BF) method. The results demonstrate that the proposed NSDP method for calculating PO scattered fields from concave surfaces is frequency-independent and error-controllable. Numerical examples are provided to verify the efficiencies of the NSDP method.

Topik & Kata Kunci

Electrical engineering. Electronics. Nuclear engineering Cellular telephone services industry. Wireless telephone industry

Penulis (6)

Yu Mao Wu

Hanzhang Zhou

Ya-Qiu Jin

Jun Hu

Haijing Zhou

Weijie Wang

Format Sitasi

APA MLA BibTeX

Wu, Y.M., Zhou, H., Jin, Y., Hu, J., Zhou, H., Wang, W. (2020). The Efficient Method for Calculating the Physical Optics Scattered Fields from the Concave Surfaces. https://doi.org/10.1155/2020/5296754

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Informasi Jurnal

Tahun Terbit: 2020
Sumber Database: DOAJ
DOI: 10.1155/2020/5296754
Akses: Open Access ✓