Yuri (satellite)
Broadcasting Satellite or BS is the common name for one of Japan's direct broadcast satellites.
The first satellite of this series, called BSE or Yuri, was launched in 1978. The last BS series satellite, BS-3b, was launched in 1991.
Early models
The 350 kg BSE was followed in 1984 and 1986 by the operational and essentially identical BS-2a and BS-2b satellites, respectively. Each spacecraft carried two active and one spare 100 W. 14/12 GHz transponder. Built by EURO with assistance from ASR, the BS-2 series satellites were designed for five years of operation. BS-2a was moved to a graveyard orbit in 1989, as was BS-2b in 1992.
BS satellites
BS satellites were used for Direct-To-Home television services in Japan. Japanese satellite television, which uses an analog format, started with test broadcasts carried out by the semigovernmental NHK (Japan Broadcasting Corporation) in 1984. At the time, direct satellite TV reception (DTH) was obtainable with a small parabolic antenna 40 cm to 60 cm in diameter in all areas of Japan when broadcast from a geostationary earth orbit (GEO) at 110 degrees east longitude. All BS satellites were of the same basic configuration: 3-axis stabilization of a rectangular spacecraft bus with two elongated solar arrays. After the first successful test of satellite broadcasting with a TV signal, many Japanese producers of consumer electronics began to deliver a range of equipment with built-in satellite receivers for the local consumer market.
Eventually, the satellites of the BS series were replaced by the more advanced B-Sat series.
Satellites
| Satellite | Launch Date | Vehicle | Launch Site | NSSDC ID | Comments |
|---|---|---|---|---|---|
| BSE | 1978-04-07 | Delta 2914 | CCAFS LC-17 | 1978-039A | Also known as "Yuri 1" |
| BS-2A | 1984-01-23 | N-2 | Tanegashima | 1984-005A | Two of three transponders failed within three months[1] |
| BS-2B | 1986-02-12 | N-2 | Tanegashima | 1986-016A | |
| BS-X | 1990-02 | Launch failure[2] | |||
| BS-2X | 1990-02-22 | Ariane 44L | CSG | Destroyed during launch of Ariane V36[3] | |
| BS-3A | 1990-08-28 | H-I | Tanegashima Space Center,Tanegashima Japan | 1990-077A | |
| BS-3H | 1991-04-19 | Atlas-Centaur | CCAFS LC-36 | Destroyed during launch of Atlas-Centaur #070[4] | |
| BS-3B | 1991-08-25 | H-I | Tanegashima | 1991-060A | |
| BS-3N | 1994-07-08 | Ariane 44L | CSG | 1994-040B |
References
- ^ "Learning to compete in Japan, part 2". Entrepreneur.com. 1995. (dead link)
- ^ Yeop, Oh W. (1991). "위성방송시대를 대비한 남북한 - 방송방식 통합에 관한 연구 TV" (PDF). Korea Telecom Association: 14. Retrieved 2009-02-15.
{{cite journal}}: Cite journal requires|journal=(help); Unknown parameter|coauthors=ignored (|author=suggested) (help) - ^ "TSE - Ariane V36". The Satellite Encyclopedia.
- ^ "TSE - Atlas AC070". The Satellite Encyclopedia.