AOTF测量光谱分辨率提升算法的仿真

根据声光可调谐滤波器(Acousto-Optical Tunable Filter, AOTF)光谱测量系统分辨率随衍射波长变化的特点，研究了利用反卷积算法提高AOTF光谱仪测量光谱分辨能力的方法。结合光谱分辨率的分布，在谱段范围内进行坐标非线性变换，使整个光谱范围内的传递函数相同。再利用非线性迭代反卷积方法和傅里叶自反卷积方法对仿真AOTF光谱系统获取的线谱数据进行分辨率提升处理。仿真结果在分辨率上很大程度地得到了还原，原来由于分辨率低而丢失的信息得到了复原。

Simulation of Resolution Enhancing Algorithms for Spectra Mearsured by AOTF

According to the feature that the resolution of the Acousto-Optical Tunable Filter (AOTF) spectral measurement system changes with the diffraction wavelength, a method using deconvolution algorithm to improve the spectral resolution capability of AOTF spectrometers is studied. Combining with the distribution of spectral resolution, nonlinear coordination transformation is performed in the spectral range so as to keep a same transfer function over the entire spectral range. Then, the nonlinear iterative deconvolution method and Fourier self-deconvolution are used to process the line spectral data acquired by the Fourier spectral system for resolution improvement. The simulation results are restored in resolution to a great extent and the original low resolution information which is lost because of low resolution is recovered.