【摘要】 介绍了自制的地基多轴差分吸收光谱系统,该系统采用二维面阵CCD探测器,将不同水平仰角所接收的光信息分布在面阵CCD的不同区域,实现了对不同水平仰角痕量气体的同时测量,并对系统中面阵CCD探测器的偏置、暗电流、噪声、响应线性以及成像光谱仪的分辨率、光谱范围等性能进行了测试。给出了该系统对不同观测水平仰角下大气O₃的监测结果,结果表明此多轴差分吸收光谱系统能够满足大气监测的要求。更多还原

【Abstract】 The self-made ground-based multi-axis differential optical absorption spectroscopy（MAX-DOAS） is introduced.Two-dimensional CCD array is used in this system,which enables the images of optical signals obtained from different elevation angles distributing in different area in CCD.Thus it is possible to be detected simultaneously for atmospheric trace gases from different elevation angles.The performances of the detector and imaging spectrometer,such as offset,dark current,noise,linearity,resolution,wavelength range,are tested. Monitoring results of O₃ from different angles are presented.Results show that the MAX-DOAS system can satisfy the need of atmospheric monitoring.更多还原