摘要
基于大气湍流受限的调制传递函数模型,研究了调制传递函数(MTF)和点扩展函数(PSF)对短波红外探测器(SWIR)、中波红外探测器(MWIR)及长波红外探测器(LWIR)光电性能的影响,并对其进行了数值模拟。结果表明:大气湍流强度对红外探测器的空间分辨率有明显影响。弱湍流对中波和长波红外探测器的光电性能影响较大,湍流受限的MIF超过衍射受限的MTF而占主要地位;探测器的空间分辨率随着其孔径及波长的增加而降低。
Based on the modulation transfer-function model associated with the atmosphere turbulence, the impact on the electro-optic performance of short wave infrared （SWIR） detector,mid wave infrared （MWIR） detector and long wave （LWIR） detector, which induced by modulation transfer-function （MTF） and point spread function （PSF） is studied numerically. It is shown that the intensity of atmosphere turbulence has evidently influenced upon the spatial resolution,the weak turbulence has a greater impact on the electro-optic performance of MWIR detector and LWIR detector,the turbulence-induced MTF is worse than that of the diffraction-induced under condition of weak turbulence, the detector spatial resolution decreases with the aperture diameter and wavelength increasing.
出处
《激光与红外》
CAS
CSCD
北大核心
2009年第2期162-165,共4页
Laser & Infrared
关键词
大气湍流
调制传递函数
点扩展函数
空间分辨率
atmosphere turbulence
modulation transfer-function
point spread function
spatial resolution
作者简介
闫俊成（1984-），男，在读研究生，主要从事大气湍．流对光电探测器性能影响方面的研究。E—mail：briskyjc@163．com
