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Space-borne short-wave infrared signal processing circuit and processing method thereof

A signal processing circuit and short-wave infrared technology, which is applied in the direction of TV, electrical components, color TV, etc., can solve the problems of large-scale infrared processing circuit, poor anti-noise ability, limited transmission bandwidth, etc., and achieve compact structure and anti-noise Good, good signal-to-noise ratio

Pending Publication Date: 2019-04-05
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of large overall circuit scale, limited transmission bandwidth and poor anti-noise ability of the existing infrared processing circuit, the present invention provides a signal processing circuit and processing method of a spaceborne short-wave infrared detector

Method used

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  • Space-borne short-wave infrared signal processing circuit and processing method thereof
  • Space-borne short-wave infrared signal processing circuit and processing method thereof
  • Space-borne short-wave infrared signal processing circuit and processing method thereof

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with specific embodiments.

[0034] The embodiment of the present invention is designed for a signal processing circuit of a space-borne short-wave infrared hyperspectral imager, and includes a high-speed data serial transmission mode.

[0035] Such as figure 1 The short-wave infrared signal processing circuit provided by the embodiment of the present invention includes an FPGA unit, a FLASH storage unit, an analog video signal operational amplifier unit, an analog-to-digital conversion unit, an image data output unit, a crystal oscillator unit, a power supply and distribution unit, and the like.

[0036] (1) Analog video signal operational amplifier unit

[0037] The analog video signal op amp unit is composed of an analog video interface and an analog op amp. Its main function is to input the detector into the analog video for op amp processing, and adjust the output level to meet the requirements...

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Abstract

The invention relates to a space-borne short-wave infrared signal processing circuit and a processing method thereof. The circuit comprises an analog video signal operational amplifier unit, an analog-to-digital conversion unit, an FPGA unit and an image data output unit, the analog video signal operational amplifier unit comprises an analog video interface and an analog operational amplifier, theimage data output unit comprises a serial / deserial transceiver TTLK2711 and TLK2711 output physical interface; the analog operational amplifier includes four operational amplifier units, each of theoperational amplifier units correspondingly processes one pair of analog video signals in a differential form; the analog-to-digital conversion unit employs an ADDI7004 chip to convert the four pairsof analog video signals in the differential form output by the analog operational amplifier to digital video signals in a differential form with the sampling maintenance function. The problem is solved that a current short-wave infrared signal is converted and transmitted from the analog signal to the digital signal to achieve short-wave infrared high-resolution imaging.

Description

technical field [0001] The invention relates to digital conversion of analog signals of short-wave infrared detectors and high-speed transmission of digital signals, and in particular to a space-borne short-wave infrared signal processing circuit and processing method. Background technique [0002] With the development and progress of aerospace technology, satellite remote sensing has higher and higher requirements for ground resolution and swath width; equipment based on spectral imaging is increasingly showing high temporal resolution, high spatial resolution and high spectral resolution development trend. Imaging equipment has also expanded from the common visible spectrum to short-wave infrared, medium-wave infrared, and long-wave infrared. [0003] The infrared imaging system is a system that can detect the infrared radiation of the target, and convert the infrared radiation of the target object into an image through photoelectric conversion, signal processing and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/33H04B10/118
CPCH04B10/118H04N5/33H04N23/60
Inventor 闫鹏温志刚孔亮刘强张昕魏文鹏刘文龙刘学斌
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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