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�������պ����ѧѧ�� 2008, Vol. 34 Issue (10) :1147-1150    DOI:
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1. �������պ����ѧ ������ѧ���繤��ѧԺ, ���� 100191;
2. �й�����Ƽ����Ź�˾ һԺ12��, ����100854
Effect of atmospheric scintillation on laser communication system by pseudo-non-diffracting beam
Li Meng1, Wang Zhongyu1, Gao Xiaoying2*
1. School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. The 12th Institute of the First Academy of China Aerospace Science and Technology Corporation, Beijing 100854, China

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Abstract�� In pseudo-non-diffracting beam communication system, the intensity variance on the receiver is brought by atmospheric turbulence, and thus the bit-error rate(BER) of the communication system could be effected. Ignoring other noises in the system, the relationship between BER with the refractive index structure parameter, communication distance and wavelength was deducted based on the distribution of intensity variance. The changing law of BER along with index structure parameter was researched through computer simulation, the impact of communication distance and wavelength on BER was discussed and the allowed range of communication distance was determinated under BER criterion of 10-9. It is indicated that the atmospheric turbulence-s effect to BER can be weaken by choosing appropriate weather and sunlight condition, decreasing communication distance and using laser with longer wavelength.
Keywords�� optical communication   atmospheric turbulence   computer simulation   bit-error rate     
Received 2007-10-10;
Fund:

����Ƽ����»���������Ŀ(2006-2007)

About author: �� ��(1982-),��,ɽ��������,��ʿ��,limenglee@aspe.buaa.edu.cn.
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�� ��, ������, ����ӱ.������˸�Խ��������伤��ͨ��ϵͳ��Ӱ��[J]  �������պ����ѧѧ��, 2008,V34(10): 1147-1150
Li Meng, Wang Zhongyu, Gao Xiaoying.Effect of atmospheric scintillation on laser communication system by pseudo-non-diffracting beam[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(10): 1147-1150
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