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Feasible carbon-trade model for low-carbon density ecosystem 期刊论文  OAI收割
JOURNAL OF APPLIED ECOLOGY, 2022, 页码: 12
作者:  
Zhang, Xueyan;  Ma, Xin
  |  收藏  |  浏览/下载:12/0  |  提交时间:2022/09/21
Feasible carbon-trade model for low-carbon density ecosystem 期刊论文  OAI收割
JOURNAL OF APPLIED ECOLOGY, 2022, 页码: 12
作者:  
Zhang, Xueyan;  Ma, Xin
  |  收藏  |  浏览/下载:24/0  |  提交时间:2022/09/21
Optimum design of laser encoding and decoding on laser beam-riding guidance (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Frontiers of Manufacturing and Design Science, ICFMD 2011, December 11, 2011 - December 13, 2011, Taichung, Taiwan
作者:  
Yang L.;  Yang L.
收藏  |  浏览/下载:33/0  |  提交时间:2013/03/25
Operating principle of laser beam-riding guidance was set forth. Based on the principle of spatial frequency-encoding  experimental results demonstrated that the receiver can receive correctly the encoded signal and can decode the signal  an optimum laser encoding mode was designed  measurement for the missdistance is feasible and all the performance parameters satisfy the demand. (2012) Trans Tech Publications  which can transfer continuous laser into pulse laser that represents different position information. Then the mathematic model of deviation from target is built  Switzerland.  a modified encoding pattern was presented  which is composed of two light paths crossed 90. Azimuth information of target is given in orthogonal coordinate system and deviation from target is linearity. As well as  characteristic distribution of spatial laser field is analyzed. Corresponding decoding mode was presented  by testing in 2 kilometers outdoor  
Realization of the imaging-auto-focus on the APRC using splicing- CCD (EI CONFERENCE) 会议论文  OAI收割
International Conference on Graphic and Image Processing, ICGIP 2011, October 1, 2011 - October 2, 2011, Cairo, Egypt
Lu Z.; Guo Y.; Xue X.; Ma T.; Lv H.
收藏  |  浏览/下载:13/0  |  提交时间:2013/03/25
Annular sub-aperture stitching interferometry for testing of large asphreical surfaces (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China
作者:  
Zheng L.-G.;  Zhang X.-J.;  Deng W.-J.;  Wang X.-K.
收藏  |  浏览/下载:78/0  |  提交时间:2013/03/25
Annular subaperture stitching interferometric technology can test large-aperture  and the PV and RMS of residual error of the full aperture phase distribution is 0.027 and 0.0023  high numerical aperture aspheric surfaces with high resolution  the relative error of PV and RMS is -0.53% and -0.31%  respectively. The results conclude that this splicing model and algorithm are accurate and feasible. So it provides another quantitive measurement for test aspheric surfaces especially for large aperture aspheres besides null-compensation.  low cost and high efficiency without auxiliary null optics. In this paper  the basic principle and theory of the stitching method are introduced  the reasonable mathematical model and effective splicing algorithm are established based on simultaneous least-squares method and Zernike polynomial fitting. The translation errors are eliminated from each subaperture through the synthetical optimization stitching mode  it keeps the error from transmitting and accumulating. The numerical simulations have been carried on by this method. As results  the surface map of the full aperture after stitching is consistent to the input surface map  the difference of PV error and RMS error between them is -0.0074 and -0.00052 ( is 632.8nm)  respectively