The Technical Study Of Spectrometric Calibration

The spectrometric calibration technology is studied in this thesis, including:1. Tenth class of imaging spectrometer and typical instruments is classified.The theories of Filtering spectrometer, Dispersive spectrometer and Interferometric spectrometer are introduced detailed and the similarities and differences of them is analyzed.2. The calibration theories of CCD camera and Dispersive spectrometer are introduced, the calibration theories of Interferometric spectrometer is summarized, including theories of Spectral Calibration, Relative Radiometric Calibration and Absolute Radiometric Calibration. Preflight Laboratory Calibration, Preflight Field Calibration, In-flight Calibration, Ground-based Calibration and cross calibration is introduced in detail and the similarities and differences of calibration theories of CCD camera, Dispersive spectrometer and Interferometric spectrometer are analyzed.3. The conception and evaluation method of uncertainty are introduced in detail. The uncertainty factors and composed uncertainty of phases and contents are summarized.4. The status of remote sensor calibration is researched, Preflight Laboratory Calibration of AVIRIS (Airborne Visible/Infrared Imaging Spectrometer), In-flight Calibration of MODIS (MODerate resolution Imaging Spectrometer) and both calibration of FTHSI (Fourier Transform HyperSpectral Imager) are introduced in emphasis.5. For hyperspectral imager of "Small Satellite System for Environment and Disaster Monitoring and Forecasting"(spatially modulated spectrometer), the detailed results of Spectral Calibration, Relative Radiometric Calibration and Absolute Radiometric Calibration and uncertainty are given.The main innovations in this thesis are:1. The calibration theory of Interferometric spectrometer is summarized, brought forward enforceable method and steps of calibration.2. A relative radiometric calibration method based on Monochromator is invented.3. Uncertainty factors and methods of Preflight Laboratory Calibration (Spectral Calibration, Relative Radiometric Calibration and Absolute Radiometric Calibration), Preflight Field Calibration, In-fight Calibration and Vicarious Calibration are invented.