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激光雷达中含时截面引起的时差和成像失真研究

Keywords: 成像系统,成像失真,含时激光反射截面,脉冲展宽,激光成像雷达

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Abstract:

基于激光辐射理论,推导了单像素激光脉冲测距中与时间相关的激光反射横截面关系式.在高斯基模强度分布、高斯时间分布及平面反射的近似条件下,研究了含时截面引起的反射脉冲形变及时间测量时差,给出了误差的解析解.针对脉冲测距的激光成像雷达,对时差导致的图像失真,给出了相应的仿真结果.结果表明,时差随激光脚印面积和反射倾角增加而增加,随激光脉宽的增加而减小,其带来的成像失真变现为图像形变和方向性差异两种典型现象.

References

[1]  胡以华,魏庆农,刘建国,等.机载激光波束扫描回波脉冲特征分布[J].应用激光,1997,17(3):108-111. Hu Yihua, Wei Qingnong, Liu Jianguo, et al. An analysis of the characteristics of the return pulse in airborne laser beam scanning[J]. Applied Laser, 1997,17(3):108-111. (in Chinese)
[2]  Oven Steinvall. Effects of target shape and reflection on laser radar cross sections[J]. Applied Optics, 2000,39(24):4381-4391.
[3]  郭裕兰,鲁敏,谭志国,等.采用投影轮廓特征的激光雷达快速目标识别[J].中国激光,2012,39(2):200-205. Guo Yulan, Lu Min, Tan Zhiguo, et al. Fast target recognition in ladar using projection contour features[J]. Chinese Journal of Lasers, 2012,39(2):200-205. (in Chinese)
[4]  Vaidyanat han M, Blask S, Higgins T, et al. Jigsaw phase Ⅲ: a miniaturized airborne 3-D imaging laser radar with photon-counting sensitivity for foliage penetration[J]. SPIE, 2007,6550:1-12.
[5]  胡春生.脉冲半导体激光器高速三维成像激光雷达研究[D].长沙:国防科学技术大学,2005. Hu Chunsheng. Investigation into high-speed pulsed laser diode 3D-imaging ladar[D]. Changsha: National University of Defense Technology, 2005. (in Chinese)
[6]  姜海娇,来建成,王春勇,等.激光雷达的测距特性及其测距精度研究[J].中国激光,2011,38(5):234-240. Jiang Haijiao, Lai Jiancheng, Wang Chunyong, et al. Research on ranging property of laser radar and its range accuracy[J]. Chinese Journal of Lasers, 2011,38(5):234-240. (in Chinese)
[7]  闫小伟,邓甲昊,孙志慧.线阵扫描式激光成像探测系统建模与仿真[J].北京理工大学学报,2010,30(4):456-459. Yan Xiaowei, Deng Jiahao, Sun Zhihui. Modelling and simulation of laser imaging system based on linear array detection[J]. Transactions of Beijing Institute of Technology, 2010,30(4):456-459. (in Chinese)
[8]  Yu Miao, Ren Jianhua, Hsu Dashsiung, et al. High resolution Ladar based on scanning distance-imaging[J]. IISME, 2012,459:411-415.
[9]  Christopher D J, Brian M, Roger S. A 32×32 pixel Flash laser radar system incorporating InGaAs PIN and APD detectors[J]. SPIE, 2004,5412:250-256.
[10]  俞宽新,江铁良,赵启大.激光原理与激光技术[M].北京:北京工业大学出版社,2007:210-240. Yu Kuanxin, Jiang Tieliang, Zhao Qida. Laser principles & technology[M]. Beijing: Beijing University of Technology Press, 2007:210-214. (in Chinese)
[11]  Johnson S. Range precision of Ladar systems[D]. Ohio: The Air Force Institute of Technology, 2008.
[12]  李磊,胡以华,赵楠翔,等.激光遥感目标回波脉宽展宽特性实验[J].红外与激光工程,2010,39(2):246-250. Li Lei, Hu Yihua, Zhao Nanxiang, et al. Experiment on the stretching characteristics of pulse width of laser remote sensing echo[J]. Infrared and Laser Engineering, 2010,39(2):246-250. (in Chinese)

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