Nonlinearity correction and dispersion analysis in FMCW laser radar

Hao Zhao; Bingguo Liu; Guodong Liu; Fengdong Chen; Zhitao Zhuang; Yahui Yu; Yu Gan

doi:10.1117/12.2075446

3 December 2014 Nonlinearity correction and dispersion analysis in FMCW laser radar

Hao Zhao, Bingguo Liu, Guodong Liu, Fengdong Chen, Zhitao Zhuang, Yahui Yu, Yu Gan

Proceedings Volume 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors; 929729 (2014) https://doi.org/10.1117/12.2075446
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

Abstract

Frequency Modulated Continuous Wave laser radar is one of the most important ways to measure the large-size targets , combining the advantages of laser with conventional FMCW radar. Dispersion compensation and non-linear calibration are two key aspects in FMCW laser radar measurement. The paper studies the method of frequency-sampling to correct the Nonlinearity and analyzes the importance of dispersion compensation. We set up experimental verification platform, choose 1550nm band continuously tunable external cavity infrared laser as the light source, use all-fiber optical device structures, choose balanced detectors as photoelectric conversion, and finally acquire data with high speed PCI-E data acquisition card, write a measurement software with Labview. We measured the gage block 1 meter away. The experiment results show that the frequency sampling method correct the Nonlinearity well and there is a significant impact on the accuracy because of the fiber dispersion, dispersion must be compensated to obtain high accuracy. The experiment lays the foundation for further research on FMCW Laser radar.

Citation Download Citation

Hao Zhao, Bingguo Liu, Guodong Liu, Fengdong Chen, Zhitao Zhuang, Yahui Yu, and Yu Gan "Nonlinearity correction and dispersion analysis in FMCW laser radar", Proc. SPIE 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, 929729 (3 December 2014); https://doi.org/10.1117/12.2075446

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
11 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

LIDAR

Distance measurement

Modulation

Refractive index

Signal detection

Frequency modulation

Laser applications

Show All Keywords

Keywords/Phrases

Search In:

Publication Years