卫星平台振动对色散型光谱仪光谱成像质量的影响分析  

Analysis of Influence of Satellite Platform Vibration on Spectral Imaging Quality of Dispersive Imaging Spectrometer

作　　者：王晓燕[1,2] 唐义[2] 唐秋艳[2] 王静[2] 倪国强[2] 

机构地区：[1]装甲兵工程学院基础部,北京100072 [2]北京理工大学光电学院,光电成像技术与系统教育部重点实验室,北京100081

出　　处：《光谱学与光谱分析》2011年第12期3407-3411,共5页Spectroscopy and Spectral Analysis

基　　金：国家(973计划)项目(2009CB724005);国家自然科学基金项目(40804048);国家(863计划)项目(2009AA12Z225)资助

摘　　要：卫星平台振动导致色散型成像光谱仪在曝光过程中与地物产生相对运动,从而严重地影响了光谱数据质量。本文以PHI为色散型光谱仪模型,研究计算了俯仰角、侧滚角、偏航角以及三角综合按照卫星振动信号和不同振幅的谐波振动对光谱数据的空间图像和光谱的影响程度,并且仿真出了各种振动下的畸变光谱数据立方体,得到卫星平台振动造成光谱数据畸变的一般规律。结果表明,色散型光谱仪对卫星振动振幅要求较高,微小的振幅对光谱的影响也非常大,必须对光谱数据进行校正和对卫星平台进行减振,才能保证地物光谱的真实性。atellite platform vibrations make dispersive imaging spectrometer and objects generate relative movement in exposuretime,which seriously affects the quality of spectral data.PHI was made as the model of dispersive spectrometer,the impact ofpitch,roll,yaw and three-axis vibrations on spectral data were studied chiefly,and distorted spectral data cubes under variousvibrations were simulated,then the general law of distortion spectral cube caused by satellite platform vibration was gained.The results show that the dispersive imaging spectrometer has high requirements for reduction of vibration amplitude,A small ampli-tude also can generate great influence on spectrum.The spectral data must be corrected and the vibration of satellite platformmust be reduced to ensure the authenticity of spectrum.

关 键 词：色散型光谱仪 卫星振动 图像运动 光谱 

分 类 号：TH744.1[机械工程—光学工程]