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29
Dec

Communications and broadcasting satellite family members among the stars 6B satellite – radio and television network of industry

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Communications and broadcasting satellite family members among the stars 6B satellite – radio and television network of industry

Communications and broadcasting satellite family members among the stars 6B satellite – radio and television network of industry

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Home Page > Business > Human Resources > Communications and broadcasting satellite family members among the stars 6B satellite – radio and television network of industry

Communications and broadcasting satellite family members among the stars 6B satellite – radio and television network of industry

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Posted: Oct 18, 2010 |Comments: 0
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Star 6B satellite in China Satellite Communications Corporation in July 2005 to the French Virginia Aerospace, Inc. (Thales) Order of the communications and broadcasting satellite, was in July 2007 5 in China, Xichang Satellite Launch Center Long 3 B rocket, was successfully positioned at longitude 115.5o.

1, Satellite Design Principles Satellite platform and payload optimization of advanced and mature technology and design to ensure long life and high reliability. Select France SB4000 satellite platform, the design power of 9000 ~ 10000W, design life of more than 15 years; star on the fuel, solar panels output power, has Battery And traveling wave tube Amplifiers So there is a certain margin, or back up, launch insurance and meet the needs of in-orbit lifetime.

Satellite downlink coverage in Asia and Oceania, down the equivalent isotropic radiated power in the coverage area is greater than 35dBW above, the satellite antenna configuration more vice to form a variety of beam coverage, the satellite transponder can be used flexibly to meet the user voice, data, image and multimedia transmission service needs.

2, the state of satellite technology

6B satellite in satellite design life of 15 years, the service life of 16.5 years. Satellite size 2.25m × 2m × 4.5m, satellite dry weight 1847kg, a launch weight of 4516kg, solar panels for the north and south solar wings, each wing formed by the four, the maximum output power of 10400W, currently, the normal output power of 9670W, end of life power of 8500W. On-load when two groups 92A Ni-MH batteries, 54 batteries each monomer. Track keeping accuracy of ± 0.05o, antenna pointing accuracy 0.13o, the end of satellite life reliability of 0.75.

Satellite payload design considerations application requirements, make full use of the resources of C-band, standard and extended frequency band, occupying a bandwidth of 1.6G. Configure the satellite transponder 38, a bandwidth of 36MHz, traveling wave tube amplifier power 82W, Transponder 24, prepared for the two groups of 19, communication receiver preparation for the 6 4. Polarization isolation is: China and the surrounding areas> 33dBW, other coverage area 30dBW.

For the convenience of users, configure a 1.4m satellite antenna and two 2.4m antennas, respectively, the formation of the Asia-Pacific, regional and national beam.

Satellite downlink coverage area to all of China, Mongolia, the Korean Peninsula, Japan, Russia, parts of Asia, South Asia, Southeast Asia, Central Asia, West Asia, Australia, New Zealand, covering areas EIRP (equivalent isotropic radiated power): 36 44.5dBW.

Downlink EIRP: Beijing, Shanghai, Guangzhou, Kunming, Lanzhou, connecting the central area 42dBW, the Chinese territory (except the South China Sea) 41dBW, the South China Sea 40dBW, Asia, Australia, most of 37dBW, New Zealand and Some South Pacific islands 36dBW.

SFD (saturation flux density): -70 ~ 95dBW/m2.

G / T =- 5dB / K (Asia beam).

Beacon frequency: Horizontal 4199MHz, vertical 3701MHz. Chinasat 6B

Frequency Counter Planning Map 6B satellite downlink in the satellite coverage map (3920MHz)

3, satellite operations and services

China Satcom satellites in order to ensure the healthy operation of building in the life of a satellite control stations and satellite communications control center, weather monitoring and management of satellite body and the operation of communication services.

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US, N. Zealand crews rescue family lost aboard boat in South Pacific

author: admin category: hot trends

US, N. Zealand crews rescue family lost aboard boat in South Pacific
HONOLULU – The U.S. Coast Guard says a family of four lost in their boat in the South Pacific for six days has been rescued. Petty Officer Angela Henderson says the two adults and two children were brought to safety Saturday, about 230 from their island nation of Kiribati.
Read more on Minneapolis-St. Paul Star Tribune

Mexican police arrest alleged child gunman
Mexican police detained a minor accused of working as a gunman for a drug cartel after shocking videos and photos surfaced online of fresh-faced boys posing with guns, corpses.
Read more on MSNBC

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07
Sep

The Best Antivirus Program For a Family Computer

author: admin category: Programas Windows Mas Buscados

by BitDefenderES

The Best Antivirus Program For a Family Computer

Control Nuisance Threats – Along with all the truly dangerous threats, there are many nuisance threats like adware and spam. These usually do no real damage, but can display annoying messages or fill your email inbox with trash and inappropriate content. Some ad tracking programs even install cookies to track your movements on the web so that you can be better targeted with advertising.

Access and Privacy – Many security programs include a parental control module to control access to sites on the internet that may not be appropriate for children. This is a great feature for a family computer so you need not constantly monitor your child as they use the web. Some software goes an additional step by offering a password manager and privacy controls to help protect your private information. By securing all your secret passwords and preventing personal information like your address or phone number from being transmitted without your permission, you can better protect your children and your privacy.

Resource Management – There are times when you are doing work or playing games that require most of the available resources of your computer to operate efficiently. By carefully selecting the best antivirus program for your needs, you can choose from applications that include a game mode or other means to control the activities of your security software like scanning for threats and file optimization. This feature allows you to stay fully protected, yet delay and temporarily reduce the activities of your program so you can devote your computing resources where you want them.

Optimization – When was the last time you took time out of your schedule to defrag your hard drive, delete temp files, or optimize your registry? I thought so. Very few people do this important maintenance until there is a problem, and at that point it is often too late. Some security suites offer a full line-up of optimization utilities that run automatically in the background to keep your computer and files running efficiently at top speed.

Other Security Services – There is more to computer security than just preventing attacks from online threats. What about physical threats like fire, flood, and theft? Some packages include file backup modules and online storage so your files are automatically saved to secure remote storage. A few even offer ID protection services so you can register your social security number, bank accounts, and credit cards so the service can monitor for unusual or unauthorized use of your personal information and help to protect your identity.

As you can see, there are many options you may want to consider for your computer security. By choosing the best antivirus program for your computer, you can get the protection you need along with features that will help secure your privacy and identity from prying eyes.

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Communications and broadcasting satellite family members among the stars 6B satellite – radio and television network of industry

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The Best Antivirus Program For a Family Computer

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