Du Lei, Zhao Yan, Wu Falin. Imaging analysis of extended source light transmission through high speed mean flow field[J]. Infrared and Laser Engineering, 2014, 43(5): 1490-1498.
| Citation:
|
Du Lei, Zhao Yan, Wu Falin. Imaging analysis of extended source light transmission through high speed mean flow field[J]. Infrared and Laser Engineering, 2014, 43(5): 1490-1498.
|
Imaging analysis of extended source light transmission through high speed mean flow field
- 1.
School of Instrumentation Science and Opto-electronics Engineering,Beihang University,Beijing 100191,China
- Received Date: 2013-09-04
- Rev Recd Date:
2013-10-07
- Publish Date:
2014-05-25
-
Abstract
Extended source light transmission through mean flow field and imaging have not been fully studied. When an extended source is closed to an imaging system in a forebody with a side-mounted window, light emitted by this extended source passing through the mean flow field and imaging are studied with ray tracing and Fourier optics. It is found that imaging deviation angles and imaging blur indexes of different point sources of the extended source are different. So integrated deviation index and integrated blur index are adopted to describe entire deviation and blur conditions of the extended source imaging, respectively. It is also found that when the relative position of the extended source and imaging system is invariant, and the mean flow field moves along flow, expansion and optical axis directions relative to the imaging system respectively, integrated deviation index and integrated blur index vary. Varying conditions of the two indexes are different among the three moving conditions. The reasons of these phenomena are deeply analyzed. In engineering design, this research may be beneficial to selection of a proper location of the imaging system relative to the window.
-
References
|
[1]
|
|
|
[2]
|
Yin Xingliang. A new subdiscipline of contemporary optics-aerooptics[J]. Engineering Science, 2005, 7(12): 1-6. (in Chinese) |
|
[3]
|
Shi Ketian, Cheng Xiaoli, Ma Handong. Numerical simulationof aero-optical effects for the flow field around the opticalwindow [J]. Infrared and Laser Engineering, 2010, 39(1):6-11. (in Chinese) |
|
[4]
|
|
|
[5]
|
Chen Cheng. Theory researches and numerical simulation on the optical transmission distortions throughout the high speed flow field [D]. Beijing: The Second Academy of China Aerospace, 2005: 1-82. (in Chinese) |
|
[6]
|
|
|
[7]
|
|
|
[8]
|
Zhang Haosu. A study of the calculation and emulation to aero-optical effects [D]. Beijing: Beihang University, 2007:1-83. (in Chinese) |
|
[9]
|
|
|
[10]
|
Eric Tromeur, Eric Garnier, Pierre Sagaut. Analysis of the Sutton model for aero-optical properties of compressible boundary layers [J]. Journal of Fluids Engineering, 2006,128(3): 239-246. |
|
[11]
|
|
|
[12]
|
Xu Liang, Cai Yuanli. Influence of altitude on aero-opticimaging deviation[J]. Applied Optics, 2011, 50(18): 2949-2957. |
|
[13]
|
Wang Tao, Zhao Yan, Xu Dong, et al. Numerical study of evaluating the optical quality of supersonic flow fields [J].Applied Optics, 2007, 46(23): 5545-5551. |
|
[14]
|
|
|
[15]
|
Wang Tao. A study of optical transmission through the flow of fluid-hypersonic [D]. Beijing: Beihang University, 2007:1-63. (in Chinese) |
|
[16]
|
|
|
[17]
|
Yu Daoyin, Tan Hengying. Engineering Optics [M]. Beijing:China Machine Press, 2006: 338-386. (in Chinese) |
|
[18]
|
|
|
[19]
|
Li Guichun. Aero-optics [M]. Beijing: National Defense Industry Press, 2006: 130-131. (in Chinese) |
-
-
Proportional views
-
DownLoad: