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An ingaas shortwave infrared detector signal processing system

A short-wave infrared and signal processing technology, applied in the field of signal processing, can solve the problem of two-channel signal imbalance, not supporting the main and standby interfaces of the input terminal, etc., to achieve the effect of avoiding amplification, good circuit symmetry, and small footprint

Active Publication Date: 2017-07-28
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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  • An ingaas shortwave infrared detector signal processing system
  • An ingaas shortwave infrared detector signal processing system
  • An 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 short-wave infrared detector signal processing system, which comprises an InGaAs short-wave infrared detector, a signal input terminal, a differential single-end conversion circuit, a signal conditioning filter circuit, an analog-to-digital conversion circuit, and a data processing circuit. The system realizes signal impedance matching, amplification, and main-backup interface support through a differential single-ended conversion circuit. The signal is processed by a signal conditioning filter circuit, and then enters an analog-to-digital conversion circuit to output digital data, and finally transmits the data to a data processing circuit. middle. Compared with the traditional InGaAs short-wave infrared detector signal processing system, it has the characteristics of low noise introduced by the circuit, the input terminal supports system main backup, and strong anti-interference ability.

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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Patent Type & Authority Patents(China)
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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