Weak signal detection algorithm for colored noise in laser guidance

被引：1

作者：

Li, Mengya ^{[1
]}

Mo, Bo ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Aerosp Engn, Beijing, Peoples R China

来源：

OPTICAL ENGINEERING | 2020年 / 59卷 / 03期

关键词：

weak signal; correlation detection; colored noise; whitening algorithm; laser guidance;

D O I：

10.1117/1.OE.59.3.033103

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Correlation detection can be used to extract weak signals such as those weakened by noise and attenuation. However, complex background noise contains both white and colored noise. The white noise is independent in the time domain, whereas the colored noise has a certain dependency, and the correlation detection algorithm cannot extract useful signals from the background mixed with colored noise. An improved correlation detection algorithm for whitening colored noise is discussed. Simulation experiments show that for laser signal amplitude similar to the noise amplitude, the correlation detection algorithm can extract the pulse signal, and the white noise background has a significantly improved signal-to-noise ratio of 2.3 times higher than the colored noise background. The experiment also proves that the whitening algorithm discussed can extract weak laser signals very well. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：11

共 15 条

[1] Low-cost detection of lasers [J].

Benton, David M. .

OPTICAL ENGINEERING, 2017, 56 (11)

[2]

Cheng Pengfei, 2012, Infrared and Laser Engineering, V41, P2844

[3] Improved axial position detection in optical tweezers measurements [J].

Dreyer, JK ;

Berg-Sorensen, K ;

Oddershede, L .

APPLIED OPTICS, 2004, 43 (10) :1991-1995

[4] Removing the impulsive noise contained in a self-mixing interferometry system using outlier detection [J].

Gao, Yan ;

Yu, Yanguang ;

Xi, Jiangtao ;

Guo, Qinghua ;

Tong, Jun ;

Tong, Sheng .

OPTICAL ENGINEERING, 2014, 53 (12)

[5]

Hsieh CH, 2012, 2012 INTERNATIONAL CONFERENCE ON OPTICAL MEMS AND NANOPHOTONICS (OMN), P3, DOI 10.1109/OMEMS.2012.6318773

[6]

Hu S., 2017, SEMICOND OPTOELECTRO, V38, P278

[7]

Huang Lei, 2013, Journal of Projectiles, Rockets, Missiles and Guidance, V33, P27

[8]

Jingneng L., 2012, IMAGE LOCAL INVARIAN

[9] Controllable Increase of Boron Content in B-Pd Interstitial Nanoalloy To Boost the Oxygen Reduction Activity of Palladium [J].

Li, Jun ;

Chen, Junxiang ;

Wang, Qiang ;

Cai, Wen-Bin ;

Chen, Shengli .

CHEMISTRY OF MATERIALS, 2017, 29 (23) :10060-10067

[10]

Li-Min Zhou, 2010, Journal of Electronic Science and Technology, V8, P366, DOI 10.3969/j.issn.1674-862X.2010.04.014

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