Diffraction effect based imaging spectrometer and high-spatial-resolution spectrum imaging method

Abstract

The invention discloses a diffraction effect based imaging spectrometer and a high-spatial-resolution spectrum imaging method. The imaging spectrometer comprises a prepositioned device, a diffractiondevice, a collimation device, an array type detection chip, a control device and a data calculation and analysis system. The imaging spectrometer controls the diffraction device via the control device, the detected light intensity of the same pixel element under different control conditions is different, and is substituted into a matrix equation to calculate the spectrum, and the control device outputs more control parameters to realize high spectral resolution; and the array type detection chip includes relatively more pixel elements, a target to be detected is divided into areas, each pixelelement can serve as an independent detector to carry out spectrum measurement on different subunit areas in the imaging area to be detected, and thus, the spatial resolution of spectrum imaging is higher. Compared with a traditional imaging spectrometer, the imaging spectrum of the invention is smaller in size, lower in cost and higher in performance.

Description

technical field [0001] The invention relates to an imaging spectrometer and a spectral imaging method for obtaining rich information of spatial dimension and spectral dimension, which can be used in the technical field of remote sensing and imaging with high spatial resolution and high spectral resolution. Background technique [0002] The main function of the imaging spectrometer is to obtain almost continuous spectral data of each pixel while acquiring a large number of narrow-band continuous spectral images of the target, so a data cube composed of two-dimensional spatial information and one-dimensional spectral information of the measured target can be obtained. At present, imaging spectrometers are mainly used in hyperspectral aerial remote sensing, and are also widely used in physical evidence inspection, military, biomedicine, security testing and other fields. [0003] The portable small imaging spectrometer modularizes each unit of the original instrument, adjusts i...

AI Technical Summary

Problems solved by technology

However, the existing commercial imaging spectrometers only focus on improving the spectral resolution, but their spatial resolution is low (tens or even hundreds of meters), so it is necessary to develop an imaging spectrometer with both higher spatial and spectral resolutions.

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