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Multichannel digital automatic gain control method and controller

A technology of automatic gain control and control devices, applied in the direction of gain control, amplification control, instruments, etc.

Inactive Publication Date: 2002-05-22
WUHAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, in systems such as phased array radar, phased array sonar, multi-beam laser or infrared, it is required to automatically control the consistency of multiple channel gains. Obviously, the single channel automatic gain control method and control device cannot meet this requirement. Require

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  • Multichannel digital automatic gain control method and controller
  • Multichannel digital automatic gain control method and controller
  • Multichannel digital automatic gain control method and controller

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Embodiment Construction

[0012] The control process of the multi-channel digital automatic gain control method provided by the present invention is: at first set the preset channel number n, the preset output gain Gi of each channel in the digital signal processor or the microprocessor through the input device (i=1, 2...n), the speed Si (i=1, 2,...n) and precision Ei (i=1, 2,...n) to reach the preset output gain parameters, or first set The number of channels n, the predetermined channel CHn, the speed Si (i=1, 2, ... n) and the precision Ei (i = 1, 2, ... n) parameters to reach the output gain of the predetermined channel, At the same time, the peak value Pi (i=1, 2,...n) and sampling frequency of the channel output signal are given; then the instantaneous voltage or current signal output by each channel is collected, and each signal is converted into a digital signal. When the digital signal of each channel After the instantaneous value XiEi, the control quantity Ki(m) of the gain amplifier=Ki(m-1)+...

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Abstract

A multichannel digital automatic gain control method and apparatus thereof are provided in present invention differing from the existing single channel control method and apparatus. The apparatus is provided with two or more than two channel circuits and a gain amplifier corresponding to the channel circuits. A digital signal processor or a microprocessor is further comprised in the apparatus by which the output gain of the channels is controlled based on a plurality of optional instructions and parameters which are stored in the digital memory of the digital signal processor or microprocessor. Optimally controlling of the output gain of the channels is ensured by utilizing arithmetic of control quantity iteration when channel precision can not achieve the requirement. Furthermore, the output gain of each channel reaching the requirement of speed and precision of predermined gain is also ensured.

Description

technical field [0001] The invention relates to an automatic gain control method and a control device using the control method, in particular to a multi-channel digital automatic gain control method and control device controlled by a digital calculator. Background technique [0002] Existing automatic gain control methods and control devices are all single-channel automatic gain control methods and devices. device. At present, in systems such as phased array radar, phased array sonar, multi-beam laser or infrared, it is required to automatically control the consistency of multiple channel gains. Obviously, the single channel automatic gain control method and control device cannot meet this requirement. Require. Contents of the invention [0003] For this reason the purpose of the present invention is to provide a kind of multi-channel digital automatic gain control method and control device, this control method and contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/34H03G3/30
Inventor 田建生吴世才杨子杰石振华
Owner WUHAN UNIV