| Autor: |
Tan, Guodong, Wang, Qunbiao, Rocca, Paolo, Duan, Xuechao, Yang, Dongwu, Feng, Shufei, Chen, Guangda |
| Zdroj: |
IEEE Transactions on Antennas and Propagation; November 2024, Vol. 72 Issue: 11 p8215-8227, 13p |
| Abstrakt: |
This article presents a heuristic best-fitting-paraboloid (BFPH) method, tailored for reflector antennas subject to gravitational distortion. First, the best fitting problem is formulated a nonlinear least-squares problem (NLSP) for the distorted reflector, wherein three heuristic rules (DRs), crucial for the problem at hand, are derived based on two typical distortion modes observed in antennas. Then, a suitable optimization algorithm is employed to solve the NLSP, in which a customized strategy is developed for the definition of the initial value in order to guarantee effective and reliable final solutions. A set of numerical results are reported and discussed to demonstrate the superior performance of the BFPH method in comparison to existing state-of-the-art methods. More specifically, it supplies higher antenna gain, reduced pointing error, enhanced robustness, and better symmetry in the far-field pattern. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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