Multiresolution grid algorithm in the SBR and its application to the RCS calculation

Suk, S.-H.; Seo, Тае-Il; Park, Hae‐Sung; Kim, Dong-Won

doi:10.1002/mop.1188

Cited by 61 publications

(36 citation statements)

References 5 publications

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“…5(b) with an angular resolution of 1 • at 10 GHz frequency. The result is in good agreement with the measured data [14]. [14] for the corner at 10 GHz, vv-polarization.…”

Section: Numerical Results and Discussionsupporting

confidence: 91%

“…The first simple target is a right-angle dihedral corner with the width 133 mm and the height 138 mm as illustrated in Fig. 5(a), which has been studied in [14]. The monostatic RCS result for vv-polarization is shown in Fig.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…The simple ship is the second validated target defined in [14][15][16], where some of the geometric details are unknown. Hence, a new ship is modeled based on the available geometric parameters (0.9×0.2×0.2 m), as shown in Fig.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…6(a). As this ship is not identical with the one in [14][15][16], which provide the measured data, a MLFMM result is used to verify the accuracy. observed between these two results.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…The adaptive grid division method has been proposed to reduce the initial number of rays [14,15]. On the other hand, the key idea to reduce the number of intersection tests is the use of acceleration data structures.…”

Section: Introductionmentioning

confidence: 99%

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Kd-Tree Based Fast Ray Tracing for RCS Prediction

Tao¹,

Lin²,

Bao³

2008

PIER

121

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Abstract-Ray tracing is of great use for computational electromagnetics, such as the well-known shooting and bouncing ray (SBR) method. In this paper, the kd-tree data structure, coupled with the mailbox technique, is proposed to accelerate the ray tracing in the SBR. The kd-tree is highly effective in handling the irregularly distribution of patches of the target, while the repeatedly intersection tests between the ray and the patch when using space division acceleration structures can be eliminated through the mailbox technique. Numerical results show excellent agreement with the measured data and the exact solution, and demonstrate that the kd-tree as well as the mailbox technique can greatly reduce the computation time.

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“…5(b) with an angular resolution of 1 • at 10 GHz frequency. The result is in good agreement with the measured data [14]. [14] for the corner at 10 GHz, vv-polarization.…”

Section: Numerical Results and Discussionsupporting

confidence: 91%

Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…6(a). As this ship is not identical with the one in [14][15][16], which provide the measured data, a MLFMM result is used to verify the accuracy. observed between these two results.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kd-Tree Based Fast Ray Tracing for RCS Prediction

Tao¹,

Lin²,

Bao³

2008

PIER

121

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A high precision shooting and bouncing rays method without mesh for scattering calculation of complex target

2019

Int J Numerical Modelling

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To extend the application of shooting and bouncing rays (SBR) method in the penetration structure and further improve the calculation accuracy, an improved mesh free SBR method that completely implements ray‐tracing and electromagnetic computing in 3‐D geometrical modeling software is proposed. The basic idea is to combine the non‐uniform rational b‐splines (NURBS) surface modeling function and open application programming interface (Open API) to implement the process of mesh free ray tracing, which greatly improve calculation accuracy and efficiency of SBR. Based on this, the improved SBR method can yield a superior performance for scattering analysis of complex targets, especially at the problem where reflected and transmitted waves exist simultaneously in a target. The numerical results demonstrate that the improved SBR is highly effective in computing scattering fields of complex targets.

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Implementation of an efficient shooting and bouncing rays scheme

Dikmen¹,

Ergin²,

Sevgili³

et al. 2010

Micro & Optical Tech Letters

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Implementation of the shooting and bouncing rays (SBR) method for radar cross section or scattering center prediction of complex electrically large objects is studied with a focus on the computational efficiency. A triangulated CAD model is assumed and SBR is processed by a ray-triangle intersection algorithm. An octree space partitioning, which might be based on either rectangular boxes or spheres as bounding volumes, is used to speedup the intersection decision. The effect of proper implementation and choice of the bounding volume to reduce ''the constant in front'' of the leading order complexity is demonstrated. It is shown that the required computer resources can be reduced drastically using the techniques outlined in this article.

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Multiresolution grid algorithm in the SBR and its application to the RCS calculation

Cited by 61 publications

References 5 publications

Kd-Tree Based Fast Ray Tracing for RCS Prediction

Kd-Tree Based Fast Ray Tracing for RCS Prediction

A high precision shooting and bouncing rays method without mesh for scattering calculation of complex target

Implementation of an efficient shooting and bouncing rays scheme

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