Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A frequency-modulated continuous wave laser ranging nonlinear correction device and method

A non-linear correction, frequency modulation continuous wave technology, applied in measurement devices, radio wave measurement systems, electromagnetic wave re-radiation and other directions, can solve modulation efficiency, current-frequency linearity unstable output, laser ranging precision and accuracy It can not meet the needs and other problems, and achieve the effect of high-accuracy laser ranging, radar speed measurement, and current-frequency output linear stability.

Active Publication Date: 2022-04-15
HANGZHOU GUANGPO INTELLIGENT TECH CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the working state of the laser is significantly affected by temperature, driving and working time, resulting in unstable output of wavelength, current-frequency modulation efficiency, and current-frequency linearity, which leads to the accuracy and accuracy of laser ranging cannot meet the demand.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A frequency-modulated continuous wave laser ranging nonlinear correction device and method
  • A frequency-modulated continuous wave laser ranging nonlinear correction device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The present invention will be described in detail below with reference to the specific embodiments shown in the drawings, but these embodiments are not limited to the structures, methods, or functional transformations made by those skilled in the art in accordance with these embodiments. All are included in the scope of the invention.

[0042] Such as figure 1 In one embodiment of the present invention, the present invention provides a frequency modified continuous wave laser ranging nonlinear correction device including a laser 10, a balance detector module 11, a processing module 12, and a modulation module 13, wherein

[0043] The laser 10 is configured to receive an external input current and output the current detecting optical signal to the balance detector module 11;

[0044] The balance detector module 11 is configured to receive the current detecting optical signal and form a coherent light, and output a differential current signal to the processing module 12;

[0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a frequency modulation continuous wave laser ranging non-linear correction device, comprising: a laser, receiving an external input current, and outputting a current detection light signal to a balance detector module, and a balance detector module, receiving the current detection light signal and form coherent light, output the differential current signal to the processing module, and the processing module calculates the nonlinear coefficient of the coherent light frequency according to the obtained differential current signal to obtain the functional relationship of the input current, and outputs a The compensation current signal is sent to the adjustment module, and the adjustment module linearly adjusts the received compensation current signal, and outputs a triangular wave compensation current signal to feed back to the laser for current compensation of the input current of the laser. Correspondingly, the invention also discloses a non-linear correction method for frequency modulation continuous wave laser ranging. The invention realizes high-precision laser ranging.

Description

Technical field [0001] The present invention relates to the field of laser ranging techniques, and more particularly to a frequency modified continuous wave laser ranging nonlinear correction device and method. Background technique [0002] The FM continuous wave laser ranging can achieve high-precision ranging measurement, which has very good prospects in laser radar ranging and speed. The frequency modulation continuous wave is a technique of acquiring a destination location, speed and other parameters, and a laser source that requires frequency linear modulation by measuring the frequency domain response obtained by measuring the transmitted optical signal and the echo signal. [0003] The FM continuous wave laser ranging system can be used in two ways of linear frequency modulation signals and nonlinear frequency modulation signals. For linear frequency modulation, the continuous wave tuning laser is linearly modulated using a periodic triangular modulation signal such that t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/497G01S17/34
CPCG01S17/34G01S7/497
Inventor 黄锦熙巩少斌陈一帆潘汉球白云峰
Owner HANGZHOU GUANGPO INTELLIGENT TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com