A PRIOR PARAMETER EXTRACTION METHOD FOR THE SOLUTION OF WIDE-ANGLE ELECTROMAGNETIC SCATTERING PROBLEMS BASED ON COMPRESSED SENSING

2021 ◽  
Vol 102 ◽  
pp. 207-215
Author(s):  
Daoping Wang ◽  
Ming Sheng Chen ◽  
Xin-Yuan Cao ◽  
Qi Qi ◽  
Xiangxiang Liu ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Electromagnetic Scattering ◽  
Extraction Method ◽  
Parameter Extraction ◽  
Wide Angle ◽  
Scattering Problems

scholarly journals Fast Direct Solution of Electromagnetic Scattering from Left-Handed Materials Coated Target over Wide Angle

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
Guo-hua Wang ◽  
Ying-bao Geng
Keyword(s):  
Electromagnetic Scattering ◽  
Incident Angle ◽  
Linear Equations ◽  
Computation Time ◽  
Wide Angle ◽  
Memory Consumption ◽  
Scattering Problems ◽  
Left Handed ◽  
Computation Process ◽  
Systems Of Linear Equations

When solving the electromagnetic scattering problems over wide angle, the traditional method of moments (MoM) needs to repeat the solving process of dense systems of linear equations using the iteration method at each incident angle, which proved to be quite inefficient. To circumvent this problem, a fast numerical method based on block LDLT factorization accelerated by adaptive cross approximation (ACA) algorithm is presented to analyze the electromagnetic scattering of left-handed materials (LHM) coated target. The ACA algorithm is applied to impedance matrix filling and all steps of block LDLT factorization process, which can accelerate the computation process and reduce the memory consumption. The numerical results proved that the proposed method is efficient in calculating monostatic RCS of LHM coated target with many required sampling angles. Compared with the traditional MoM, computation time and memory consumption are reduced effectively.

Compressed sensing based on FE-BI for solving electromagnetic scattering problems

2015 ◽  
Author(s):  
Hou Dayou ◽  
Chen Mingsheng ◽  
Kong Meng ◽  
Cao Xinyuan ◽  
Zhang Liang ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Electromagnetic Scattering ◽  
Scattering Problems

scholarly journals Application of Two-Dimensional Compressive Sensing to Wavelet Method of Moments for Fast Analysis of Wide-Angle Electromagnetic Scattering Problems

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yi Liu ◽  
Qi Qi ◽  
Xinyuan Cao ◽  
Mingsheng Chen ◽  
Guoqing Deng ◽  
...  
Keyword(s):  
Compressive Sensing ◽  
Method Of Moments ◽  
Electromagnetic Scattering ◽  
Wide Angle ◽  
Two Dimensional ◽  
Induced Current ◽  
Linear Superposition ◽  
Scattering Problems ◽  
Wavelet Method ◽  
Right Hand

To efficiently solve the electromagnetic scattering problems over a wide incident angle, a novel scheme by introducing the two-dimensional compressive sensing theory into the wavelet method of moments is proposed. In this scheme, a linear system of equations with multiple right-hand sides in wavelet domain is formed firstly, and one side of the bilateral sparse transform to the induced current matrix is simultaneously accomplished and then the bilateral measurement of the induced current matrix is operated by the linear superposition of the right-hand side vectors a few times and the extraction of rows from the impedance matrix. Finally, after completing the other side of the bilateral sparse transform, the wide-angle problems can be solved rapidly by two times of recovery algorithm with prior knowledge. The basic principle is elaborated in detail, and the effectiveness is demonstrated by numerical experiments.

Dual Compressed Sensing Method for Solving Electromagnetic Scattering Problems by Method of Moments

2018 ◽  
Vol 17 (2) ◽  
pp. 267-270 ◽  
Author(s):  
Xinyuan Cao ◽  
Mingsheng Chen ◽  
Xianliang Wu ◽  
Meng Kong ◽  
Jinhua Hu ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Method Of Moments ◽  
Electromagnetic Scattering ◽  
Scattering Problems
Sign in / Sign up

Export Citation Format

Share Document