研究目的
To overcome the dif?culties of near ?eld scattering prediction for classical physical optics by proposing a novel modi?ed physical optics algorithm.
研究成果
The MPO algorithm retains the accuracy and computational complexities under far ?eld assumptions and performs well both in far ?eld and near ?eld. Future extensions could involve modi?ed equivalent edge currents for edge diffractions and modi?ed iterative physical optics for multiple bounces in cavities.
研究不足
The major error in the calculated results is most probably due to the absence of consideration of edge scattering and creeping waves.
1：Experimental Design and Method Selection:
The study proposes a modi?ed physical optics algorithm for near ?eld scattering prediction, incorporating the distinct wave propagation vector, near ?eld Green function, and antenna radiation pattern.
2：Sample Selection and Data Sources:
Numerical simulations are conducted on electrically large objects with PEC surfaces.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned.
4：Experimental Procedures and Operational Workflow:
The algorithm involves setting up local reference coordinates for each facet, considering the radiation gain based on the antenna radiation pattern, and refining the Green function for near ?eld calculations.
5：Data Analysis Methods:
The accuracy and computational complexities of the algorithm are evaluated through numerical simulations.
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