Broadcasting Satellite System Corporation
The Broadcasting Satellite System Corporation (B- SAT; jap株式会社 放送 衛星 システム, kabushiki - gaisha Hoso Eisei shisutemu ) is a Japanese company for satellite communication services, based in Shibuya, Tokyo.
B satellite was founded on 13 April 1993 with the aim to procure communications satellites and to entertain, and to lease the transponder capacity. The largest shareholder (49.9% ) is the NHK ( Japanese Broadcasting Corporation ). In 2007, the company an operating income of 7.44 billion yen.
Satellite
BSAT 1
BSAT -1a was appointed in June 1994, Hughes Space and Communications International, and launched on 17 April 1997 together with Thaicom 3 by an Ariane 44LP rocket. On 28 April 1998, the backup satellite BSAT -1b followed along Nilesat 101 by an Ariane 44P. Both satellites were placed in a geostationary orbit at a position of 110 degrees East. Replace the two BS-3 satellite from NHK. After obtaining the license for broadcasting of digital services (eg for Japanese television ) by the Japanese authorities BSAT -1b adopted in July 1998, on his service. The spin-stabilized and cylindrical satellites based on Hughes Hughes satellite bus 376 (now Boeing 376) and are in orbit with fuel and 723 kg heavy. They have a diameter of 2.17 m and a height of 3.15 m with folded antenna at the start and 7.97 m with extended antenna and solar cell ausgefahrenem body. The satellite consists of two sections, a co-rotating Satellitenbussektion with Star - 30BP - drive system and a non- co-rotating payload section. The supported nickel - cadmium batteries solar cells deliver 1200 watts of power for the 106 -watt ( TWTA ) transmitter and the on-board electronics. Commands are received at the frequency of 17 GHz and transmitted telemetry data at a frequency of 12 GHz. As the payload satellites are eight (four reserve) Ku -band transponders. As life decade has been planned.
BSAT 2
BSAT -2a was appointed in March 1999 at Orbital Sciences Corporation, and after some delays on 8 March 2001 launched 110 ° East in geostationary orbit at the position by an Ariane -5G rocket with Euro Bird 1. The backup satellite BSAT - 2b is not reached on 12 July 2001 by a failure of the Ariane 5G rocket into orbit, the second Artemis satellite could reach orbit using its ion engine. Then was commissioned Orbital Sciences in October 2001 with the construction of the replacement satellite BSAT - 2c was also started on 11 June 2003 by an Ariane 5G rocket with Optus C1 and a month later began operating. The satellite is based on Orbital Sciences slight Star -1 satellite bus. The cube-shaped, three -axis stabilized satellite with two solar panels ( made of silicon with a power of 2000 W ( BOL) ) in orbit have a size of 3.8 × 2.8 m with a span of 15.7 m. You are at the start of 1317 kg heavy ( 1292 kg in orbit ) and carry eight (four reserve) Ku -band transponders ( 17 GHz channels, 12 GHz transmit) with an output power of 130 watts which is a 2.2 - m antenna use. The drive is a solid - kick stage and a Hydrazintriebwerk used. The life of 10 years are planned.
BSAT 3
In May 2005, then followed by an order for the construction of BSAT -3a time at Lockheed Martin Commercial Space Systems ( LMCSS ) as a replacement for BSAT -1a and 1b. It was built in Newtown, Pennsylvania, and as the 38th satellite from Lockheed Martin, based on the satellite bus A2100A. The launch into geostationary orbit position of 110 ° East took place on 14 August 2007 together with Spaceway -3 with an Ariane 5 ECA rocket. In November 2007, the cube-shaped satellite took with two solar panels with 14,65 span its regular operation with the broadcasting of analogue and digital television programs. The 1.98 -tonne and based on the A2100A satellite bus satellite ( launch mass 1967 kg, 927 kg in orbit ), while twelve Ku -band transponders (including four reserve) with an output power of 130 watts. Its solar cells deliver 1800 watts and a service life 13 years indicated. In April 2008, Lockheed Martin was tasked with the construction of BSAT -3b, which is intended for HD transmissions. The start of the 2060 kg heavy satellite took place on 28 October 2010, together with Eutelsat W3B on a " Ariane 5 ECA " rocket.
BSAT 3c
In early 2009 followed the contract to build the more advanced BSAT 3c with 24 transponders, which was launched in August 2011 by an Ariane -5.