Laser ranging system based on high speed pseudorandom modulation and photon counting techniques

Yang Fang; Zhang Xin; He Yan; Chen Weibiao

Pseudorandom modulation rate which used to modulate 1 550 nm fiber laser was prompted from 622 MHz to 1 GHz in the laser ranging system based on high speed pseudorandom modulation and photon counting technology. Ranging performance was compared and demonstrated under two different modulation rates using the optical fiber delay method. 10 order M-sequence pseudorandom code and the same InGaAs/InP single photon detector with detection efficiency of 10% were implemented in the system. Under condition of input signal average energy of 1.9410-17 J, the similar SNRs were acquired in the two systems and the ranging accuracy was improved by 1.58 times under high modulation rate which was in good agreement with theory result. The actual ranging platform was established and ranging experiment was carried out indoor. The ranging accuracy of 2.1 cm was obtained when measuring a high-reflected target which was about 4.5 m away. The result is useful for outdoor ranging system.

1. Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;

2. University of Chinese Academy of Sciences,Beijing 100049,China;

3. School of Electronic and Information Engineering,Shanghai University of Electric Power,Shanghai 200090,China

Received Date: 2013-04-20

Rev Recd Date: 2013-05-23

Publish Date: 2013-12-25

Key words:

Abstract: Pseudorandom modulation rate which used to modulate 1 550 nm fiber laser was prompted from 622 MHz to 1 GHz in the laser ranging system based on high speed pseudorandom modulation and photon counting technology. Ranging performance was compared and demonstrated under two different modulation rates using the optical fiber delay method. 10 order M-sequence pseudorandom code and the same InGaAs/InP single photon detector with detection efficiency of 10% were implemented in the system. Under condition of input signal average energy of 1.9410-17 J, the similar SNRs were acquired in the two systems and the ranging accuracy was improved by 1.58 times under high modulation rate which was in good agreement with theory result. The actual ranging platform was established and ranging experiment was carried out indoor. The ranging accuracy of 2.1 cm was obtained when measuring a high-reflected target which was about 4.5 m away. The result is useful for outdoor ranging system.

HTML

Reference (18)

[1]	Afzal R S, Yu A W. The geoscience laser altimeter system(GLAS) laser transmitter[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2007, 13(3): 511-536.
[2]	Chen W B, Hou X, Bi J Z, et al. Solid-state laser for laser altemeter in Chang'E lunar exporer[C]//CLEO Baltimore, MD USA, 2007, 1-2.
[3]	Araki H, Tazawa S, Noda H, et al.Observation of the lunar topography by the laser altimeter LALT on board Japanese lunar explorer SELENE[J]. Advances in Space Research, 2008, 42(2): 317-322.
[4]	Ramos-Izquierdo L, Scott III V, Schmidt S, et al.Optical system design and integration of the Mercury Laser Altimeter[J]. Applied Optics, 2005, 44(9): 1748-1760.
[5]	Afzal R S.Mars observer laser altimeter:laser transmitter[J].Applied Optics, 1994, 33(15): 3184-3188.
[6]	Anthony W Y, Li S X, Shaw G B, et al. Overview of space qualified solid-state lasers development at NASA goddard space flight center[C]//SPIE, 2009, 7193: 719305-1-719305-7.
[7]	Takeuchi N, Sugimoto N, Baba H. Random modulation cw lidar[J]. Applied Optics, 1983, 22(9): 1382-1386.
[8]	Machol J L. Comparison of the pseudorandom noise code and pulsed direct-detection lidars for atmospheric probing [J]. Applied Optics, 1997, 36(24): 6021-6023.
[9]	Matthey R, Mitev V. Pseudo-random noise-continuous-wave laser radar for surface and cloud measurements[J]. Optics and Lasers in Engineering, 2004, 43: 557-571.
[10]	Rall J A R, Abshire J B, Manizade S S. Lidar measurements of clouds and aaerosols using AlGaAs lasers modulated with pseudorandom codes[C]//IEEE Lasers and Electro-Optics Society, 1992: 206-207.
[11]	Norman D M, Gardner C S. Satellite laser ranging using pseudonoise code modulated laser diodes[J]. Applied Optics,1988, 27(17): 3650-3655.
[12]	Sun X L, Abshire J B, Krainak M A, et al. Photon counting pseudorandom noise code laser altimeters[C]//SPIE, 2007, 6771: 67710O.
[13]	Abshire J B, Sun X L, Krainak M A. Laser altimetry using pseudo-noise code modulated fiber lasers and photon counting detectors[C]//CLEO Baltimore MD USA, 2005, 3: 1991-1993.
[14]	Sun X L, Abshire J B. Modified PN code laser modulation technique for laser measurements[C]//SPIE, 2009, 7199: 71990P.
[15]	Krichel N J, McCarthy A, Buller G S. Resolving range ambiguity in a photon counting depth imager operating at kilometer distances[J]. Optics Express, 2010, 18(9): 9192-9206.
[16]	Liu Lisheng, Zhao Shuai, Guo Jin. Pseudo-random frequency modulated laser heterodyne detection[J]. Infrared and Laser Engineering, 2011, 40(10): 1890-1895. (in Chinese) 刘立生, 赵帅, 郭劲. 伪随机序列调制的激光外差探测[J].红外与激光工程, 2011, 40(10): 1890-1895.
[17]	Yang Fu, He Yan, Chen Weibiao. Study of fiber laser ranging system using pseudorandom modulation and single photon counting techniques[J]. Chinese J Lasers, 2011, 38(3): 0314003-1-0314003-6. 杨馥, 贺岩, 陈卫标. 基于伪随机码调制和单光子计数的光纤激光测距研究[J]. 中国激光, 2011, 38(3): 0314003-1-0314003-6.
[18]	Yang Fang, Zhang Xin, He Yan, et al. Laser ranging system based on high speed pseudorandom modulation and photon counting techniques[J]. Chinese J Lasers, 2013, 40(2): 0208001-1-0208001-5. 杨芳, 张鑫, 贺岩, 等. 基于高速伪随机码调制和光子计数激光测距技术[J]. 中国激光, 2013, 40(2): 0208001-1-0208001-5.

Laser ranging system based on high speed pseudorandom modulation and photon counting techniques

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views