微波时间反演系统的空间超分辨率机理

物理学报

微波时间反演系统的空间超分辨率机理

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陈英明, 王秉中, 葛广顶. 2012: 微波时间反演系统的空间超分辨率机理, 物理学报, 61(2): 247-251.

引用本文:

陈英明, 王秉中, 葛广顶. 2012: 微波时间反演系统的空间超分辨率机理, 物理学报, 61(2): 247-251.

2012: Mechanism of spatial super-resolution of time-reversed microwave system, Acta Physica Sinica, 61(2): 247-251.

Citation:

2012: Mechanism of spatial super-resolution of time-reversed microwave system, Acta Physica Sinica, 61(2): 247-251.

Mechanism of spatial super-resolution of time-reversed microwave system

摘要: 时间反演系统中存在亚波长结构是系统展示空间超分辨特性的必要条件.在近场,信号是通过占主导地位的库仑场来传输的,而库仑场的分辨率极限只与散射体的线度和空间分布有关,因此可以突破微波衍射极限实现空间超分辨.
- 时间反演 /
- 超分辨率 /
- 亚波长结构
Abstract: Time-reversed system with a sub-wavelength structure is one of the necessary conditions for the system to show spatial superresolution characteristics.In the near field zone,Coulomb field predominates the transmission of signals.The resolution limit of Coulomb field is characterized only by the sizes and the spatial distribution of scatterers,which is useful for obtaining the superresolution beyond the diffraction limit.