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Wide-range and high-accuracy absolute distance measurement instrument capable of rapidly switching based on OEO

An absolute distance and fast switching technology, applied in the direction of line-of-sight measurement, distance measurement, instruments, etc., can solve the problems of increasing system cost and complexity, and achieve the effect of simple operation, good application prospects, and good concealment

Pending Publication Date: 2019-04-23
南京合太光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In addition, in order to ensure the single-mode oscillation of the entire system, it is usually necessary to adopt a system structure of dual polarization rings or double wavelength rings to simulate side modes, which greatly increases the cost and complexity of the entire system

Method used

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  • Wide-range and high-accuracy absolute distance measurement instrument capable of rapidly switching based on OEO
  • Wide-range and high-accuracy absolute distance measurement instrument capable of rapidly switching based on OEO
  • Wide-range and high-accuracy absolute distance measurement instrument capable of rapidly switching based on OEO

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Such as figure 1 As shown, the large-range, high-precision absolute distance measuring instrument based on OEO fast switching includes an instrument internal delay module 1 and a loop switching module 2, wherein the instrument internal delay module 1 includes: a laser 3, a polarization controller 4, Electro-optic modulator 5, three-port optical circulator 6, optical amplifier 7, photodetector 8, microwave amplifier 9, microwave filter 10 and microwave power beam splitter 11, laser 3 is connected with polarization controller 4, polarization controller 4 It is connected with the electro-optic modulator 5, the electro-optic modulator 5 is connected with the first optical circulator port 6a, the third optical circulator port 6c is connected with the optical amplifier 7, the optical amplifier 7 is connected with the photodetector 8, and the photodetector 8 is connected with the microwave The amplifier 9 is connected, the microwave amplifier 9 is connected with the microwave ...

Embodiment 2

[0056] Such as figure 2As shown, the large-range, high-precision absolute distance measuring instrument based on OEO fast switching includes an internal delay module 1 and a loop switching module 2, wherein the internal delay module 1 of the instrument includes: a laser 3, a polarization controller 4, an electro-optic Modulator 5, optical circulator 6, optical amplifier 7, photodetector 8, microwave amplifier 9, microwave filter 10 and microwave power beam splitter 11, laser 3 is connected with polarization controller 4, polarization controller 4 is connected with electro-optic modulation The electro-optic modulator 5 is connected to the first optical circulator port 6a, the third optical circulator port 6c is connected to the optical amplifier 7, the optical amplifier 7 is connected to the photodetector 8, and the photodetector 8 is connected to the microwave amplifier 9 , the microwave amplifier 9 is connected with the microwave filter 10, the microwave filter 10 is connect...

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Abstract

The invention discloses a wide-range and high-accuracy absolute distance measurement instrument capable of rapidly switching based on OEO. The absolute distance measurement instrument comprises an instrument inner delaying module and a loop switching module, wherein a double-chamber switching optoelectronic oscillator structure is formed by connecting the instrument inner delaying module and the loop switching module through optical fiber and a cable. The absolute distance measurement instrument has the beneficial effects that a scheme for applying the principle of accumulation amplification to measurement of wide-range absolute distance length by using OEO is capable of carrying out wide-range absolute distance measurement with a measurement grade of km and can achieve extremely high measurement accuracy with a measurement grade of mm, the operation is simple and easy, the absolute distance measurement instrument can be widely applied to the fields such as industrial measurement and control and production of precision instruments, and in addition, the distance measurement system is high in interference resistance and high in hiding performance, and thus has an extremely good application prospect in the military field.

Description

technical field [0001] The invention relates to an optical-carrying microwave ranging system, in particular to a large-range, high-precision absolute distance measuring instrument based on OEO fast switching. Background technique [0002] The development of measurement technology is the premise and basis for the development of all science and technology. As one of the seven basic physical quantities, length and angle measurement constitute the basis of all geometric measurement. Its development determines the ability of human beings to understand and transform the world. It is also a sign to measure a country's measurement technology level. [0003] Although the current method of laser interferometer can achieve the measurement accuracy of nm in the range of tens of meters, it can only measure the relative change of the distance (also known as relative distance measurement), which requires an object larger than the measured object. The precision guide rail, and the measurem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/48
CPCG01S17/48
Inventor 于晋龙马闯
Owner 南京合太光电科技有限公司
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