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Space


Japan and Satellite Communication Systems

The Japanese communications satellite program, also known by the national name Sakura ("cherry blossom"). Spacecraft in the CS series, which are launched by NASDA (National Space Development Agency) supported domestic telecommunications and also enabled new technologies to be developed and tested.

By the early 1990s the communications satellite process was one of consultation and consensus-building within several ministries and with significant input from the space and telecommunications industries. It was very effective, not only in defining carefully selected space and satellite communications programs, but also in seeing them through to successful conclusions.

This integrated and systems-oriented approach to space activities, including satellite communications, appeared to be unique. The building of consensus through the National Organization for Space Development Activities and the Space Activities Commission, the inclusion of many public entities in the planning process, and the process of review and approval of the entire space program are perhaps the most important characteristics. Additional support is provided through a highly structured and inclusive process called the Annual Space Development Program.

Key industrial participants in the Japanese space program, including satellite communications, include Nippon Electric Corporation (NEC), Mitsubishi Electric Corporation (MELCO) and Toshiba Ltd. Other companies (Fujitsu, Matsushita, etc.) occasionally play specialized roles, but most applications and scientific satellites are manufactured by only these three corporations. Although these main spacecraft suppliers are highly competitive, they all help create the Annual Space Development Program and work intensively within their assigned roles to achieve it.

By the end of 1994 Japan had deployed 19 GEO communications satellites from five series and was maintaining a constellation of 10 operational satellites at seven locations in the geostationary ring from 110 degrees E to 162 degrees E. Japan's extensive satellite-based communications program is 17 years old and has been promoted by both the national space agency NASDA and by the commercial sector. Since the program's inception, Japan has employed a mix of domestic and foreign spacecraft and launch services. Although Japan deployed another commercial communications satellite during 1993-1994, the long-awaited experimental ETS VI failed to reach GEO and was stranded in GTO.

In 1993 two of Japan's three private satellite communications companies merged in a bid to survive the economic slump that has hit Japa. The companies are Japan Communications Satellite Co. (JCSat), in which Itochu Corp. and Mitsui and Co. were the largest shareholders, and Satellite Japan Corp. (SJC), with Sumitomo Corp. and Nissho Iwai Corp. the primary investors. Nippon Telephon and Telegraph Company (NTT) operated "NSTAR", but now these satellites are already not operational, except NTT Docomo's NSTAR-c which was built for NTT DoCoMo and operated by JSAT. Commercial Telecommunications Satellites are operated by JSAT, which is World 5th revenue. Sky Perfect JSAT Corp. resulted from the 2008 merger of JSAT Corp., Sky Perfect Communications Inc., and Space Communications Corp.

SKY Perfect JSAT Corporation is a leader in the converging fields of broadcasting and communications. It is Asiaís largest satellite operator with a fleet of 16 satellites by 2014, and Japanís only provider of both multi-channel pay TV broadcasting and satellite communications services. SKY Perfect JSAT delivers a broad range of entertainment through the SKY PerfecTV! platform, the most extensive in Japan with a total of 3.7 million subscribers. In addition, SKY Perfect JSATís satellite communications services, which cover Japan and the rest of Asia, as well as Oceania, Russia, Middle East, Hawaii and North America, play a vital role in supporting safety, security and convenience for society as a whole.




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Page last modified: 15-05-2014 19:17:37 ZULU