Study On Calibration Technology Of The Interference Imaging Spectrometer

The figure and spectral information of the interesting targets can be obtained through imaging spectral technology. This technology is being used widely in the field of hyper-spectral remote sensing . Interference imaging spectrometry is the advanced subject among the visible/infrared remote sensing , and it has already become an important means to acquire three-dimension information(two-dimension spatial and one-dimension spectral information). The principle of spatially modulated interference imaging spectrometer is introduced , and Large Aperture stable interference imaging spectrometer(LASIS) is emphatic discussed . The software of spectral and the real-color picture reconstruction is given. The project of lab absolute spectral radiometrical calibration for the light high- stability interference imaging spectrometer is analyzed , as well as the designing of the on-satellite relative radiometrical calibration . We completed a series of spectral radiometrical calibration with some spectral bands under the lab condition , and obtained good result. we also introduce the influence from CCD characteristics on calibration. Some major parameters which can influence precision of spectral measuring are detailed The means of CCD calibration and compensation is analyzed which can increase the precision of spectral radiometrical calibration for the imaging spectrometer. The principle of a chemical sensing imaging spectrometer based on a high speed moving-refractor is introduced. It featured the high resolution and the high stability. The inherent nonlinerity in the system are analyzed , and the equation of optical path difference(OPD) is given . We obtained the best parameters to decrease the system nonlinerity . The simulated experiment give us ideal result which proved my analysis.