Friday, April 16, 2010

confidentiality communications

Solar-blind Ultraviolet Communication is a new type communication in free space optical communication field. Atmospheric gases, particularly ozone and oxygen, are strong absorbers of light in the spectral region between 200nm to 280nm, so that the amount of solar radiation reaching the ground in this waveband is negligible. The ultraviolet in this waveband is so-called solar-blind urtraviolet. A new generation of communications using Solar-blind blog wedding dresses 2010 as medium will not be affected by daytime and nighttime environment, thus the communication ability of anti-jamming can be greatly improved. This device also has some unique advantages, such as flexible, all-dimentional, and non-line-of-sight communication, which can meet the needs of warships, aircraft squadron confidentiality communications.Firstly, some characteristics are discussed, such as cheap jeans shop atmospheric absorption, atmospheric scattering and atmospheric turbulence, which affect the performance of Ultraviolet Optical transmission characteristics. According to the single scattering model developed cheap polo shirts by Luegtten used in research on atmospheric channel model for best clothes blog ultraviolet communication, the power loss in Ultraviolet Communication can be analyzed quantitatively. The results of simulations indicate: (1) the value of transmission loss can be minimum, while both the transmitter apex angle and the receiver apex angle are less than 90o in NLOS ultraviolet communication; (2) the value of discount wedding prom dresses transmission loss will decrease, while the transmitter beam divergence and the receiver half-field view increase.Secondly, the design of ultraviolet receiver is described in details according to the modulation of ultraviolet transmitter and the ultraviolet characteristics.
http://forum.plan-sequence.com/
http://www.bollywoodforum.ch/forum
http://www.agnosticforums.com/
http://forum.omgpu.ru/
http://fengshui.mojeforum.net/
http://woytop.spaces.live.com/default.aspx
http://hnmopp.spaces.live.com/default.aspx
http://tjfdjhj.spaces.live.com/default.aspx
http://koppyo.spaces.live.com/default.aspx
http://topppug.spaces.live.com/default.aspx