DSN Corporation ja, 株式会社ディー・エス・エヌ is a corporation owned by

SKY Perfect JSAT Group The SKY Perfect JSAT Group is a Japanese corporate group that claims to be Asia's largest satellite communication and multi-channel pay TV company. It owns the SKY PerfecTV! satellite broadcasting service and the SKY Perfect Well Think content s ...

NEC is a Japanese multinational information technology and electronics corporation, headquartered in Minato, Tokyo. The company was known as the Nippon Electric Company, Limited, before rebranding in 1983 as NEC. It provides IT and network soluti ...

and NTT Com. It was founded on December 19, 2012 for the sole purpose of acting as an investment vehicle in the

private finance initiative The private finance initiative (PFI) was a United Kingdom government procurement policy aimed at creating "public–private partnerships" (PPPs) where private firms are contracted to complete and manage public projects. Initially launched in 199 ...

that would handle the

Japanese military The Japan Self-Defense Forces ( ja, 自衛隊, Jieitai; abbreviated JSDF), also informally known as the Japanese Armed Forces, are the unified ''de facto''Since Article 9 of the Japanese Constitution outlaws the formation of armed forces, th ...

X-band The X band is the designation for a band of frequencies in the microwave radio region of the electromagnetic spectrum. In some cases, such as in communication engineering, the frequency range of the X band is rather indefinitely set at approxim ...

DSN satellite network from 2015 to 2031.

History

(JSAT) along

, NTT Com and

Maeda Corporation is a Japanese corporation which was established in 1919. Its main areas of business are building construction and civil engineering. Maeda has domestic offices in eleven Japanese cities, and overseas offices in Thailand, Hong Kong, and India. H ...

formed a

joint venture A joint venture (JV) is a business entity created by two or more parties, generally characterized by shared ownership, shared returns and risks, and shared governance. Companies typically pursue joint ventures for one of four reasons: to acces ...

called DSN Corporation. On 15 January 2013, DSN Corporation announced that it had closed a contract with the

Ministry of Defense {{unsourced, date=February 2021 A ministry of defence or defense (see spelling differences), also known as a department of defence or defense, is an often-used name for the part of a government responsible for matters of defence, found in states ...

to execute the "''Program to Upgrade and Operate X-Band Satellite Communications Functions, etc''". The contract is a

, where private funds, management and technical capabilities are used to upgrade and operate the

DSN satellite network. Based on this program, DSN Corporation will manufacture and launch two satellites plus perform the necessary upgrades to ground control stations. It will also operate, manage and maintain the facilities and equipment through fiscal years 2015 to 2030. The total program cost was estimated at ¥122,074,026,613. The plan called for the launch of the first satellite in December 2015, with a start of operations in March 2016 and a termination of operations on April 2030. The second satellite was expected to launch in January 2017, starting operations in March 2017. The program and the operations of the second satellite were expected by March 2031. JSAT role is the procurement and general management of the satellites. The first satellite, DSN-1, is actually an additional payload on one of JSAT's own satellites,

Superbird-8 Superbird-B3, known as Superbird-8 before launch, and DSN-1 (Kirameki-1) for its military payload, is a geostationary communications satellite operated by SKY Perfect JSAT Group and designed and manufactured by Mitsubishi Electric on the DS200 ...

. The second satellite,

DSN-2 DSN-2, also known as Kirameki-2, is a geostationary orbit, geostationary communications satellite to be operated by DSN Corporation, a subsidiary of SKY Perfect JSAT Group. Its payload is a pure X band, X-band and will be used for military commu ...

is a dedicated spacecraft. On 25 April 2014, JSAT announced that it had placed an order with

MELCO Melco Holdings Inc. is a family business founded by Makoto Maki in 1975 and is located in Japan. The company's most recognizable brand is Buffalo Inc. Buffalo Inc. is currently one of the 16 subsidiaries of Melco Holdings Inc., initially found ...

and its satellite platform

DS2000 The DS2000 is a geostationary communications satellite bus designed and manufactured by Mitsubishi Electric of Japan. Designed to carry payloads between and , with power requirements of up to 15 kW. It is compatible with Ariane 5, Proto ...

for its Superbird-8 satellite. It would replace

Superbird-B2 Superbird-B2, also known by its pre-launch designation Superbird-4, is a Japanese communications satellite which is operated by SKY Perfect JSAT Group. It was originally built and launched for the Space Communications Corporation (SCC), which ...

and be positioned on the 162° East orbital slot. On an earning revision, JSAT disclosed that they had confirmed container deformation after Superbird-8 / DSN-1 arrived to its launch site. In July 2016, it was published that a 25 May 2016 mishap during air transport had delayed the satellite launch by an estimated two years. A dislodged tarpaulin had blocked the bleed valve on the satellite container and the spacecraft had suffer from over pressurization damage.

Satellite network

The initial plan calls for two satellites: DSN-1 or Kirameki-1 and

or Kirameki-2. DSN-1 was supposed to be launched in 2015, but was delayed for early 2016. It was damaged during transport to the launch site on 25 May 2016, and repairs might take up to two year. The schedule has not been updated as of August 2016, but DSN-2 will be launched before DSN-1.

References

{{reflist, 2, refs= {{cite web , last1=Krebs , first1=Gunter Dirk , title=DSN 2 (Kirameki 2) , url=http://space.skyrocket.de/doc_sdat/dsn-2.htm , website=Gunter's Space Page , access-date=2016-07-20 , date=2016-04-21 {{cite web , last1=Krebs , first1=Gunter Dirk , title=Superbird 8 / DSN 1 (Kirameki 1) , url=http://space.skyrocket.de/doc_sdat/superbird-8.htm , website=Gunter's Space Page , access-date=2016-07-20 , date=2016-04-21 {{cite web , url=http://www.sptvjsat.com/wp-content/uploads/130115_hd_DSNPFIEN.pdf , title=Execution of a Program to Upgrade and Operate X-Band Satellite Communications Functions by the Subsidiary , publisher=SKY Perfect JSAT Corporation & Intelsat , date=January 15, 2013 , format=PDF , access-date=2016-07-28 {{cite web , url=http://www.sptvjsat.com/wp-content/uploads/130515_xbandjigyoukeiyaku.pdf , title=Ｘバンド衛星通信中継機能等の整備・運営事業」の実施について , trans-title=Execution of a Program to Upgrade and Operate X-Band Satellite Communications Functions by the Subsidiary , publisher=SKY Perfect JSAT Corporation & Intelsat , date=January 15, 2013 , format=PDF , language=ja , access-date=2016-07-28 {{cite web , url=http://www.jsat.net/common/pdf/news/Superbird-B2_Satellite_en.pdf , title=SKY Perfect JSAT Procures Successor to Superbird-B2 Satellite , publisher=SKY Perfect JSAT Corporation & Intelsat , date=April 25, 2014 , format=PDF , access-date=2016-07-28 {{cite web , url=http://spacenews.com/sources-tarpaulin-delays-japanese-military-communications-satellite-by-two-years/ , title=Tarpaulin delays Japanese military communications satellite by two year , publisher=Space News , first=Nobuhiro , last=Kubo , date=July 19, 2016 , access-date=2016-08-03 {{cite web , url=http://www.sptvjsat.com/load_pdf.php?pTb=t_news_&pRi=599&pJe=2 , title=Revision of Consolidated Earnings Forecasts , publisher=SKY Perfect JSAT Corporation & Intelsat , date=June 17, 2016 , format=PDF , access-date=2016-07-28 Satellites of Japan Military satellites Defense companies of Japan

History

Satellite network

See also

References