Tong Guangde, Wang Zhanshan, Shen Zhengxiang. Measurement and analysis of laser scattering characteristic of sea surface under condition of super-low-altitude[J]. Infrared and Laser Engineering, 2016, 45(2): 206003-0206003(5). doi: 10.3788/IRLA201645.0206003
| Citation:
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Tong Guangde, Wang Zhanshan, Shen Zhengxiang. Measurement and analysis of laser scattering characteristic of sea surface under condition of super-low-altitude[J]. Infrared and Laser Engineering, 2016, 45(2): 206003-0206003(5). doi: 10.3788/IRLA201645.0206003
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Measurement and analysis of laser scattering characteristic of sea surface under condition of super-low-altitude
- 1.
Key Laboratory of Advanced Micro-Structure Materials,Ministry of Education,School of Physics Science and Engineering,Tongji University,Shanghai 200092,China;
- 2.
Institute of Precision Optical Engineering,Tongji University,Shanghai 200092,China;
- 3.
Science and Technology on Electromagnetic Scattering Laboratory,Shanghai 200090,China
- Received Date: 2015-06-18
- Rev Recd Date:
2015-07-20
- Publish Date:
2016-02-25
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Abstract
It is necessary to know the laser scattering characteristics of sea surface in different sea conditions when designing the laser radar using in super-low altitude. According to the design requirements, low altitude radar work situation was simulated by the wave tank facility to solve the difficulty of actual sea environment testing, and the quantitative control of influence factors of sea surface laser scattering was realized. By using the laser scattering measurement system, the near field laser scattering data of various states and different beam irradiation angles were obtained, and the laser scattering characteristics of sea surface with regular sinusoidal wave and irregular PM spectrum were given by statistical analysis. The result shows that there are large differences between sea surface and Lambertian surface and mirror reflection should be main ingredients in the sea surface scattering distribution. Laser scattering echo fluctuation changes with the spatial wavelength of the sea surface wave and the cattering size increases with the increase of grazing angle. Furthermore, the higher the sea condition is, the stronger the corresponding scattering echo is at a fixed grazing angle, but scattering echo size will not change with the sea conditions when the grazing angle is large enough.
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References
|
[1]
|
Xue Qianzhong, Wu Zhensen, Li Liangchao, et al. Characteristics of detonator laser beam scattering from an object in the near field[J]. Journal of Xidian University(Natural Science), 2000, 27(5):594-596.(in Chinese) |
|
[2]
|
|
|
[3]
|
Zhou Yafan, Zhao Jun, Zhang Jian. Academic analysis and measuring method research on scattering characters of offshore laser[J]. Electro-Optic Technology Application, 2006, 21(4):31-34.(in Chinese) |
|
[4]
|
|
|
[5]
|
|
|
[6]
|
Geng Zhixiang, Chen Zuntian. Sea surface scattering model of laser fuze taking account of time factor[J]. Journal of Detection Control, 2009, 31(3):64-67.(in Chinese) |
|
[7]
|
Yang Chunping, Wu Jian. Properties of laser scattering from the waved seawater surface[J]. High Power Laser and Particle Beams, 2002, 14(4):526-530. |
|
[8]
|
|
|
[9]
|
|
|
[10]
|
Yang C P, Wu J. Study of laser scattering property for random cylinder surface[J]. High Power Laser and Particle Beams, 2001, 13(5):21-524. |
|
[11]
|
Li Liangchao, Wu Zhensen, Deng Rong. Comparison of the back laser rader cross-section calculation of complex object with the measurement of scale-model[J]. Chinese Journal of Lasers, 2005, 32(6):770-774.(in Chinese) |
|
[12]
|
|
|
[13]
|
|
|
[14]
|
Wu Zhensen, Xie Donghui, Xie Pinhua, et al. Modeling reflectance function from rough surface and algorithms[J]. Acta Optica Sinica, 2002, 22(8):897-901.(in Chinese) |
|
[15]
|
Zhang Yandong Wu Zhense. Light scattering and imaging of two-dimensional rough sea surface in the infrared[J]. Acta Optica Sinica, 2002, 22(9):1039-1043.(in Chinese) |
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