Abstract
recent years, the analysis and control of the electromagnetic scattering characteristics of satellites have received much attention because of the serious air and space safety problems. Typical satellites are mainly composed of main body, solar wings and multi-purpose antennas, and exhibit multi-scale geometric characteristics, which brings challenges to electromagnetic modeling technologies. Aiming at the analysis of electromagnetic scattering characteristics of satellites, this paper applies the discontinuous Galerkin domain decomposition method of integral equation (DG-DDM-IE) method to construct accurate and flexible modellings. Importantly, a cost-effective hybrid preconditioner is proposed for the multi-scale cases to improve the capability of the DG-DDM-IE method based on previous research on the diagonal domain block (DDB) preconditioner and the sparse approximate inverse (SAI) preconditioner. Numerical experiments on an object of complex multi-scale satellite show that the proposed DG-DDM-IE method has good convergence and scalability while consuming less memory.
| Translated title of the contribution | Efficient domain decomposition method of boundary integral equation for electromagnetic scattering of satellite targets |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 218-226 |
| Number of pages | 9 |
| Journal | Dianbo Kexue Xuebao/Chinese Journal of Radio Science |
| Volume | 38 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Apr 2023 |