Offset Error Research of Self-Triggering Pulsed Mini Laser Radar System

Abstract:

The paper researches on the offset error of self-triggering pulsed mini laser radar. It theoretically analyzes the variation of space charge region of PN junction in receiving photodiode. The variation value is affected by the different incident light power. One of conclusion is the laser pulse time-of-flight affected by the variation of incident light power. Another conclusion is the laser pulse width affected by the variation of incident light power as well. The paper proposes the basic equations to describe this phenomenon. In addition, the new designed experimental devices are used to prove that the theoretical analysis is true. This new system can effectively solve the offset error problems, and the negatively impact of offset error will be eliminated on the receiver of self-triggering pulsed mini laser radar system.

• Periodical: Applied Mechanics and Materials (Volumes 599-601)
• Pages: 1009-1015
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.599-601.1009
• Online since: August 2014
• Authors: Wei Zhan*, He Hua Ju
• Keywords: Offset Error, Photodiode, Pn Junction, Self-Triggering

References

[1] Chen Qian-song, Yang Cheng-wei, Pan Zhi-wen. A brief introduction on the development of Laser time-of-flight distance measurement technology [J]. Laser & Infrared, 2002, 32(1): 7~10.

[2] Yuriy Reshetyuk. Investigation and calibration of pulsed time-of-flight terrestrial laser scanners, Royal Institute of Technology (KTH) [D], 2006, 48~53.

[3] Chen qian-song, Zhao Da-long, Yang Cheng-wei. Study on self-triggering pulsed time-of-flight laser range finding [J]. Chinese J. Lasers, 2004, 31(6): 745~748.

[4] Zhang zheng-yu, Sui Xiao-lin. Faint signal digital correlation detection of laser ranging: study and simulation [J]. Chinese J. Laser, 2002, A29 (7): 661~665.

[5] J. Nishizawa. Optical Electronics [M]. Beijing: Posts &Telecom Press, 1983, 208~209.

[6] Chen Dezhang, Zhang Chengquan, Qing Guangbi. Research on laser damage threshold of photoelectric detector [J]. Laser technology, 1995, 19(5): 135~140.

[7] Lei Wuhu, Liu Songqiu, A measurement circuit of high precision and extensiveness [J]. Nuclear Electronics and Detection Technology, 2004, 24(5): 449~452.

[8] ACAM Corporation. TDC-GP2 Datasheet [Z]. Germany, (2006).

[9] ARI KILPELA. Pulsed time-of-flight laser range finder techniques for fast, high precision measurement applications [D], Oulu: University of Oulu, 2008, 75~82.

[10] ANTTI MANTYNIEMI. An integrated CMOS high precision time-to-digital converter based on stabilized three-stage delay line interpolation [D], Oulu: University of Oulu, 2008, 55~62.