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InGaAs shortwave infrared detector signal processing system

A short-wave infrared and signal processing technology, which is applied in the field of signal processing, can solve the problems of not supporting the main/standby interface of the input end, the imbalance of two-channel signals, etc., and achieve the effect of good circuit symmetry, avoiding amplification, and low power consumption.

Active Publication Date: 2015-07-01
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

[0004] The problem solved by the technology of the present invention is: to overcome the deficiencies of the prior art, to provide an InGaAs short-wave infrared detector signal processing system, which solves the two-channel signal imbalance existing in the traditional similar system, and the signal amplification link is introduced after the signal channel Additional circuit noise and the problem that traditional systems do not support active and standby interfaces at the input

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  • InGaAs shortwave infrared detector signal processing system
  • InGaAs shortwave infrared detector signal processing system

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Embodiment Construction

[0020] The idea of ​​the present invention is: according to the characteristics of the output signal of the InGaAs short-wave infrared detector, firstly, the differential signal output by the detector is converted into a single-ended signal through a differential single-ended conversion circuit and the signal is amplified, and then the signal is conditioned and filtered to complete Analog-to-digital conversion, and finally the converted data is digitally filtered, parallel-to-serial converted, and then packaged into the required data format; at the same time, according to the power-off zero output characteristics of the selected differential single-ended operational amplifier, the main backup interface for the input signal is realized support.

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, it is a schematic diagram of an InGaAs short-wave infrared detector signal processing sy...

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Abstract

The invention discloses an InGaAs shortwave infrared detector signal processing system. The InGaAs shortwave infrared detector signal processing system comprises an InGaAs shortwave infrared detector, a signal input end, a differential single-end converting circuit, a signal modulating and filtering circuit, an analog-digital conversion circuit, and a data processing circuit. Through the differential single-end converting circuit, the system realizes the signal impedance matching, amplification, and supporting of main backup interfaces; through being treated by the signal modulating and filtering circuit, the signal enters the analog-digital conversion circuit and outputs digital-form data; finally, the data is transmitted to the data processing circuit. Compared with the traditional InGaAs shortwave infrared detector signal processing system, the InGaAs shortwave infrared detector signal processing system is low in circuit leading noise, main backup in an input end supporting system, strong in anti-jamming ability, and so on.

Description

technical field [0001] The invention relates to a signal processing system, in particular to an InGaAs short-wave infrared detector signal processing system, which belongs to the field of signal processing. Background technique [0002] InGaAs short-wave infrared detector is a new type of linear array uncooled infrared detector in recent years. Compared with traditional cooled infrared devices, it has the characteristics of small size, low cost and low power consumption with similar performance. , especially suitable for application in the fields of military reconnaissance and aerospace remote sensing. The output signal of the InGaAs short-wave infrared detector has the following characteristics: 1) The output internal resistance is large, usually requiring a smaller load capacitance and a larger load resistance; 2) Higher circuit noise index requirements; 3) Generally, differential analog output is used 4) Each pixel signal maintains a fixed level value after it is establi...

Claims

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Application Information

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IPC IPC(8): G01J5/02
Inventor 樊奔韩志学马飞曹伟王栋
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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