Twelve versions of physical optics: how do they compare?

Lee, S.W.; Baldauf, J.; Ling, Hong-Shi; Chou, Ri-Chee

doi:10.1109/aps.1988.94092

Cited by 8 publications

(4 citation statements)

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“…2, is used with Range-Doppler algorithm to obtain corresponding imaging results. This complex 3-D object is considered as PEC so that the surface current can only be computed by physical optics [8]. In the simulation, center frequencies of transmitted signal are set as 6GHz and 15GHz in C and Ku band, respectively, while the signal bandwidth are all set to 600MHz.…”

Section: Simulation Resultsmentioning

confidence: 99%

Influence of Precipitation Environment in Multi-Band 3-D Complex Objects SAR Imaging

Chen

et al. 2014

AMM

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Synthetic Aperture Radar (SAR) is generally considered as an all-time and all-weather system. However, weather conditions will sometimes still affect the SAR imaging, especially when rain rate or operating frequencies are increased. In this paper, the influence of rainfall attenuation in multi-band 3-D complex target SAR imaging is investigated. As SAR echo can be considered as scattering from the target illuminated by incident wave, physical optics (PO) method is used to compute the scattered data because of its good balance between efficiency and accuracy in high frequency band. Numerical results demonstrate the rain attenuation impact on SAR image, when the relationship between rain rate and precipitation attenuation in multi-frequency band are quantitative analyzed.

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Section: Simulation Resultsmentioning

confidence: 99%

Influence of Precipitation Environment in Multi-Band 3-D Complex Objects SAR Imaging

Chen

et al. 2014

AMM

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“…AntLab for Windows is a CAD and physical optics [2] analysis environment for reflector antennas. This software synthesizes and analyzes antennas with one or two centered or offset reflecting surfaces.…”

Section: Antlab Background and Characteristicsmentioning

confidence: 99%

“…The objective is to check what happens when the feeder is displaced on the three spatial directions [8]. It is interesting to verify this situation because a Choose the best solution among the four cases Level C Effects of disappointing the feeder: experiment with the effect of pointing the feeder anywhere on the reflective surface C. 1 Feeder disappoints from A.1 C. 2 Feeder disappoints from A.2 C. 3 Feeder disappoints from A.3 C. 4 Feeder disappoints from A.4 C. 5 Choose the best solution among the four cases tolerance in the feed location is considered in a massive production. After these tests, the student has to choose the best solution for a real situation, taking into account the obtained results.…”

Section: Learning Levels and Proposal Tasksmentioning

confidence: 99%

Educational software for single- and dual-reflector antennas

Cuias

Arias

Pino

et al. 1999

Comput. Appl. Eng. Educ.

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“…The high-frequency method is very suitable for solving the electrically large-scale problems. For example, physical optics (PO) [3] is a representative one. However, when target possesses the cavity structure and the multiple reflections are dominant, PO is no longer applicable and accurate.…”

Section: Introductionmentioning

confidence: 99%

Study on Composite Electromagnetic Scattering Characteristics of Low-Altitude Target Above Valley Composite Rough Surface Using Hybrid SBR-EEC Method

et al. 2020

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The composite electromagnetic (EM) scattering characteristics of low-altitude target above valley composite rough surface are studied. The composite rough surface modeling theory is adopted to simulate the natural cavity structure of valley environment. Aiming at efficiently and accurately calculate the composite EM scattering from low-altitude target above valley environment, a hybrid method combining shooting and bouncing ray (SBR) technique and equivalent edge currents (EEC) method is proposed, in which SBR method based on the ray-density normalization (RDN) is applied to consider the multiple interactions between target and environment, and EEC method meliorates target's edge diffraction. Numerical examples illustrate the efficiency and validation of proposed hybrid method. Finally, based on the hybrid SBR-EEC method, the EM scattering characteristics of low-altitude target above valley environment are further investigated to show scattering mechanisms of this composite model and provide some useful conclusions through physical phenomena.INDEX TERMS Valley composite rough surface, shooting and bouncing ray technique, equivalent edge currents method, composite electromagnetic scattering.

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Twelve versions of physical optics: how do they compare?

Cited by 8 publications

References 0 publications

Influence of Precipitation Environment in Multi-Band 3-D Complex Objects SAR Imaging

Influence of Precipitation Environment in Multi-Band 3-D Complex Objects SAR Imaging

Educational software for single- and dual-reflector antennas

Study on Composite Electromagnetic Scattering Characteristics of Low-Altitude Target Above Valley Composite Rough Surface Using Hybrid SBR-EEC Method

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