The Efficient Method for Calculating the Physical Optics Scattered Fields from the Concave Surfaces
Joint Authors
Hu, Jun
Zhou, Hai-Jing
Wu, Yumao
Zhou, Hanzhang
Jin, Ya-Qiu
Wang, Weijie
Source
International Journal of Antennas and Propagation
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-23
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
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.
American Psychological Association (APA)
Wu, Yumao& Zhou, Hanzhang& Jin, Ya-Qiu& Hu, Jun& Zhou, Hai-Jing& Wang, Weijie. 2020. The Efficient Method for Calculating the Physical Optics Scattered Fields from the Concave Surfaces. International Journal of Antennas and Propagation،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1168862
Modern Language Association (MLA)
Wu, Yumao…[et al.]. The Efficient Method for Calculating the Physical Optics Scattered Fields from the Concave Surfaces. International Journal of Antennas and Propagation No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1168862
American Medical Association (AMA)
Wu, Yumao& Zhou, Hanzhang& Jin, Ya-Qiu& Hu, Jun& Zhou, Hai-Jing& Wang, Weijie. The Efficient Method for Calculating the Physical Optics Scattered Fields from the Concave Surfaces. International Journal of Antennas and Propagation. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1168862
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1168862