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- Title
Near-Field IPO for Analysis of EM Scattering from Multiple Hybrid Dielectric and Conductor Target and High Resolution Range Profiles.
- Authors
Wang, Qingkuan; Wang, Yijin; Tong, Chuangming; Wang, Zhaolong; Li, Ximin; Wang, Tong
- Abstract
Aiming at improving the accuracy and efficiency of scattering information from multiple targets in near-field regions, this paper proposes a near-field iterative physical optics (IPO) method based on a modified near-field Green's function for the composite electromagnetic scattering analysis of multiple hybrid dielectric and conductor targets. According to the electric field and magnetic field integral equation, the electric and magnetic current were updated utilizing the Jacobi iteration method. Then, by introducing an expansion center lying in the neighborhood of the source point, Green's function was modified for near-field scattering between multiple hybrid dielectric and conductor targets. To accelerate the implementation of the procedure, the multilevel fast multipole method, the fast far-field approximation, and parallel multicore programming were introduced. Numerical results indicate that there is good agreement between the results calculated by the near-field IPO method and MLFMM solver in commercial software FEKO while significantly reducing the computational burden. To fully exploit the scattering information, the high resolution range profiles (HRRP) of different targets under different conditions were analyzed, which can be further applied for automatic target detection and recognition.
- Subjects
MULTIPLE scattering (Physics); GREEN'S functions; FAST multipole method; AUTOMATIC target recognition; GOING public (Securities); MULTIPLE target tracking
- Publication
Remote Sensing, 2023, Vol 15, Issue 7, p1884
- ISSN
2072-4292
- Publication type
Article
- DOI
10.3390/rs15071884