A video circuit system of a spatial multispectral imager

Abstract

The invention discloses a video circuit system of a spatial multi-spectral imager, which comprises an information processing device and N imaging devices. The imaging device mainly realizes imaging of a target and generates image data. The information processing device is mainly used to control each imaging device, receive and encode the image data of each imaging device, and output the images of each imaging device in a unified manner. The imaging devices of the present invention are not related to each other, and have a many-to-one relationship with information processing devices. The invention uses the phase-locked loop technology to receive the clock signal, solves the synchronization problem of different imaging devices at different operating frequencies, and simultaneously solves the problem of unified transmission of image data of different spectral bands by adopting a subcontracting method. The invention has the characteristics of simple structure, little influence between devices, strong expansion ability and wide application range, and can be widely used in the video circuit system of the spatial multi-spectral imager composed of CCD and infrared detector.

Description

technical field [0001] The invention relates to a video circuit system, in particular to a video circuit system of a space multi-spectral imager including a CCD detector and an infrared detector. Background technique [0002] The multispectral spectral imager system is a space optical remote sensing system that integrates space geometric optics, physical optics, spectroscopy, microelectronics, thermodynamics and space materials science. It can realize continuous observation of the earth's surface day and night, which is of great significance to application fields such as environmental monitoring and resource investigation. The imaging spectral bands of a multi-spectral imager usually include visible spectral bands, near-infrared spectral bands, short-wave infrared spectral bands, mid-wave infrared spectral bands, and long-wave infrared spectral bands. In the past, there are mainly two ways to realize multi-spectrum imaging: [0003] One approach is to design imaging device...

AI Technical Summary

Problems solved by technology

Compared with the first method, this method is greatly improved, and can realize simultaneous observation of the same target in multiple spectral bands. However, due to the use of the same type of detectors (all using CCD detectors or all using infrared detectors), the Limitations in the spectral response bandwidth of detectors, this method cannot achieve observations in a wide spectral range (such as from visible light to long-wave infrared)

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