Signal processing system of variable spectrum band multispectral camera based on area array CCD

Abstract

The invention discloses a signal processing system of a variable spectrum band multispectral camera based on an area array CCD. The signal processing system comprises a variable spectrum band timing sequence controller, a drive circuit, a frame transfer area array CCD with a charge pouring function, an analog-to-digital conversion circuit and a video processor. The variable spectrum band timing sequence controller generates a timing sequence signal used for driving the area array CCD to work according to a specified spectrum band; the drive circuit converts the timing sequence signal into a drive signal of a corresponding amplitude; the frame transfer area array CCD with the charge pouring function outputs spectrum band information under the action of the drive signal; the analog-to-digital conversion circuit converts an analog signal output by the CCD into a digital signal; and the video processor receives a digital image signal and processes image information according to input parameter requirements. Compared with the signal processing system of a traditional multi- linear-array multispectral camera, the signal processing system disclosed by the invention has the advantages of a large spectrum band number, real-time adjustable spectral range of the spectrum bands, and high spectrum band width adjustment precision, etc.

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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