Earticle

초록

영어

The traditional method of heterodyne detection is improved in this paper based on the principle of laser heterodyne detection. The laser heterodyne detection system is designed with all-fiber laser radar in all fiber system, and the laser, the optical system, the receiving device and so on are connected via the passive component. The system can mix the local oscillation light with signal light of measured object information in the photodetector surface, and the difference frequency signal is obtained. Then the signal is filtered and amplified by the signal processing technique to eliminate the DC component, and the desired difference frequency signal is obtained. Through the analysis of the performance of all fiber laser heterodyne detection system, the system has a strong ability to detect weak signal, high conversion gain and signal to noise ratio, and has a good filtering effect. The system is very suitable for the application of laser ranging and so on.

목차

Abstract
 1. Introduction
 2. The Principle of Laser Heterodyne Detection
 3. Laser Heterodyne detection System Design
 4. The Performance Analysis of Laser Heterodyne Detection System
  1) Infavor of weak signal datection
  2) High conversion gain
  3) Having a good filtering ability
 5. Conclusions
 References

키워드

저자

• Cao Miao [ Changchun University of Science and Technology, Jilin Changchun,130022, China ]
• Cui Wenjie [ Changchun University of Science and Technology, Jilin Changchun,130022, China ]
• Yao Qinghua [ Changchun University of Technology, Jilin Changchun, 130012, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Signal Processing, Image Processing and Pattern Recognition

• 간기

  격월간

• pISSN

  2005-4254

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605