散射成象的似視原理
EYELIKE PRINCIPLE FOR IMAGE RECONSTRUCTION OF THE SCATTERER
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摘要: 本文在嚴(yán)格的遠(yuǎn)區(qū)散射場的框架下,探討了物象重建問題。指出在散射一逆散射問題中,只存在兩維傳氏對偶空間。文中提出在單一波數(shù),單一入射并且小成象角條件下成象的似視原理。揭示了在散射成象問題中存在著成象角與工作波長的互補(bǔ)關(guān)系。理論結(jié)果由計(jì)算機(jī)模擬得到驗(yàn)證。最后對用波的理論解釋人的視覺機(jī)制作了嘗試。
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關(guān)鍵詞:
- 散射成象; 逆散射; 似視原理; 成象角
Abstract: Within the framework of exact scattering theory and under the wave zone condition, the image reconstruction is studied. It is demonstrated that there is only a two dimensional Fourier dual space in the problem of scattering-inverse scattering. An eyelike principle for the imaging at monofrequency, monoincidence and small imaging angle is proposed and an interesting complementary relation between the imaging angle and operation wave length for the inverse scattering is revealed. Theoretical results are verified by computer simulations. An eplanation on interpreting human vision with wave theory is attempted. -
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