摘要
针对新型超分辨空间外差光谱技术特点,研究了其相位误差形成机理,采用连续可调单色光计算仪器各波长实际相位,用频率定标方式获取理论相位,在频谱域进行卷积从而剔除相位误差。利用光谱仪实测的连续光源、大气CO2吸收干涉图进行相位误差校正实验,结果表明,该算法能够达到很好的空间外差光谱仪相位误差修正效果。
Aiming at the characteristics of novel spatial heterodyne spectroscopy （SHS）, the phase error mechanism is studied, and the actual phase of each wavelength is calculated using tunable lasers and the theoretical phase is acquired by frequency calibration, and the phase error is eliminated according to convolution in the frequency domain. Using measured interferogram of continuous light source by spectrometer and atmospheric absorption of CO2 interferogram, a phase error correction experiment is carried out. The experiment, correcting the phase error of continuous light source and atmospheric absorption of CO2 interferogram measured by spatial heterodyne spectrometer, shows that the phase error correction algorithm can achieve perfect result for spatial heterodyne spectrometer.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2013年第3期313-318,共6页
Acta Optica Sinica
基金
中科院合肥物质科学研究院青年人才专项(Y03RC21123)
国家自然科学基金(4175037/D0503)
公益性行业(气象)科研专项(GYHY2011060405-1)资助课题
关键词
光谱学
空间外差
相位误差
频率定标
数据修正
spectroscopy
spatial heterodyne
phase error
frequency calibration
data correction
