A Signal Processing System of a Variable Spectrum Multispectral Camera Based on Area Array CCD

Abstract

The invention discloses a signal processing system of a variable-band multi-spectral camera based on an area array CCD, including a variable-spectrum timing controller, a drive circuit, a frame-transfer area array CCD with the function of pouring charges, and an analog-to-digital conversion circuit and video processors. The variable spectrum timing controller generates timing signals for driving the area array CCD to work according to the specified spectrum; the driving circuit converts the timing signals into driving signals of corresponding amplitudes; the frame transfer area array CCD with the function of dumping charges Under the action of the output spectrum information; the analog-to-digital conversion circuit converts the analog signal output by the CCD into a digital signal; the video processor receives the digital image signal and processes the image information according to the input parameter requirements. Compared with the signal processing system of the traditional multi-line array multi-spectral camera, the present invention has the characteristics of large number of spectral segments, real-time adjustable spectral range of spectral segments, high adjustment precision of spectral segment width, and the like.

Description

technical field [0001] The invention relates to a signal processing system of a variable-band multispectral camera based on an area array CCD, which can be used as a video signal processing system of the multispectral camera, and belongs to the technical field of video electronics design for aerospace or aviation remote sensing cameras. Background technique [0002] The existing domestic multispectral cameras generally use linear array CCDs as detectors. In order to realize the multi-spectral imaging of the camera, it is necessary to use multiple single-line linear array CCDs, and each CCD can image a spectral segment, or the CCD manufacturer can package multiple single-line linear array CCDs in one CCD to achieve multi-spectral imaging of the target. A multi-spectral camera using a linear array CCD as a detector, limited by the device process, can only detect a few spectral bands of the target, and cannot achieve the acquisition of dozens or even hundreds of spectral bands....

AI Technical Summary

Problems solved by technology

A multi-spectral camera using a linear array CCD as a detector, limited by the device process, can only detect a few spectral bands of the target, and cannot achieve dozens or even hundreds of spectral bands

At the same time, the spectral ranges of several bands are fixed, once determined, it is impossible to change the width of the track band

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