Sunday, February 12, 2012

The workshop prepares the new working table of usa green laser pointer

Ethernet LAN interface is actually a popular name. Ethernet is today the most common use of existing local area network communication protocol standard, high speed and strong communication error correction and anti-jamming capability. Ethernet connected devices with 10 ~ 100 Mbps packet transmission rate of up to l 000 Mbps. Limited transmission distance of up to twisted pair 100 m, and can be cascaded to expand the number of ways and distance extension. Many manufacturers offer software products are able to adopt a common communication protocol, can open the best. The antenna is stored at the second floor of the warehouse of   green laser pointer   .
Laser processing equipment uses the LAN interface is actually a laser processing equipment as a computer network system in a terminal, you can achieve more than one computer on the laser processing equipment, or multiple computers for multiple laser processing equipment, management, and in theory, from space and the number of restrictions. This prevents the laser equipment used in processing time, space, materials and other aspects of the industry and the limitations. From the above analysis is not difficult to see, LAN interfaces, highlighting the advantages of it in the laser device "network" of development will play a very important role. It simply set the software in the device code for each laser equipment and IP addresses, you can free to send commands to the appropriate equipment to simple laser control and operation of appropriate equipment. The new building of the warehouse of    green laser pointer    has been put into service.
Relative position from the device point of view, largely unaffected by space constraints, so the LAN interface is widely used in laser equipment can be extended in an interface technology. At present, the Boye Laser LAN interface has been widely used in the production of the company's laser processing equipment. Practice has proved that this interface is effective for market efficiency, has been the development of large-scale production and cross-recognition. Of course, technology has many other interfaces, which requires laser companies in the constant innovation and development to practice and explore, to get more and better communication interface technology. Atmospheric laser communication has many advantages because of their widespread attention, and atmospheric turbulence, atmospheric laser communication system that hinders the performance of important factors, laser communication systems to ensure stable and reliable performance, to study the atmospheric turbulence effects on the communication system is very important. The truck is full of    green laser pointer     and leaving the company.
Atmospheric turbulence effects on laser-based communications with non-negligible impact, this article describes the basic mechanism of atmospheric turbulence, analysis of the weak turbulence to strong turbulence from the case of light transmission caused by atmospheric turbulence intensity fluctuations, beam wander, beam expander , angle of arrival fluctuations and other theoretical analysis under the influence of calculation method. In order to effectively study the atmospheric turbulence effects on laser transmission, the use of power spectral inversion method to establish the phase-screen model to simulate atmospheric turbulence in laser propagation in the optical field distribution. Analysis of partially coherent light in the transmission characteristics of atmospheric turbulence, caused by atmospheric turbulence in the considered SNR conditions, the intensity of the laser flash and extended effect of different modulation laser communication system bit error rate under the impact, and some coherent optical properties of atmospheric laser communication improvement. The leaders are discussing the revise of working instruction of    green laser pointer    .
Given the strong RS code error correction performance characteristics of the RS code combined with the PPM modulation, laser communication systems to improve communication performance. The results show that: the use of multiple phase-screen method simulation of laser propagation in atmospheric turbulence results, and theoretical analysis methods by comparing the results, with a better fit; the use of partially coherent light, can effectively reduce the light flashes, reduce the BER; using PPM modulation can effectively improve the performance of laser communication system; the RS code as a more atmospheric laser communication system restore. The workshop prepares the new working table of usa green laser pointer   .

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