KODAMA on-orbit operations mark 10 years
The KODAMA, which was launched on Sept. 10, 2002, has marked its 10-year anniversary. The KODAMA succeeded in a data relay experiment with the world's fastest speed of 278 Mbps using the Advanced Land Observing Satellite "DAICHI," and has been contributing to global land observations and disaster monitoring with the DAICHI by utilizing KODAMA’s broad view area and real-time and large-volume data relay capacity. Some 95% of DAICHI's 6.54 million scenes (or almost one PB of observation data) were...
- June 2, 2004 (15:00)
- Situation of "Kodama"(Data Relay Test Satellite: DRTS)
- February 21, 2003 (17:00)
- Successful Inter-satellite Communications Experiments between DRTS (Kodama) and ADEOS-II (Midori-II)
About Data Relay Test Satellite "KODAMA" (DRTS)
"KODAMA" Data Relay Test Satellite (DRTS) to dramatically extend contact time and areas
KODAMA (DRTS), a data relay test satellite launched by the H-II A launch vehicle from the Tanegashima Space Center (TNSC), serves as a data relay station.
When a direct communication link is used, contact time between a Low Earth Orbit spacecraft and a ground station is limited to approximately 10 minutes per visible pass. When KODAMA relays data between an LEO spacecraft and a ground station, real-time communications are possible in 60% of the flight path of the spacecraft. This enables Japan, a relatively small country, to greatly extend contact time between its spacecraft and a small number of ground stations.
Furthermore, transmission from KODAMA has reached a data rate exceeding 240 Mbps - a communications speed that would enable the simultaneous transmission of data contained in 11 BS Digital High Vision channels. KODAMA is scheduled to relay data to and from the Advance Land Observing Satellite "Daichi" and the Japanese Experiment Module "KIBO" on the International Space Station (ISS), and will be used to broadcast the activities of astronauts.
Launch date: September 10, 2002
Characteristics of Data Relay Test Satellite "KODAMA" (DRTS)
|International Designation Code||2002-042B|
|Launch Date||17:20, September 10, 2002 (JST)|
|Launch Vehicle||H-IIA Launch Vehicle No.3|
|Location||Tanegashima Space Center|
|Shape||structure : 2.2 m x 2.4 m x 2.2 m
|Weight||Approx. 1500kg (at the beginning of mission life)|
|Orbiter||Geostationary orbit(GEO) (Longitude 90 degree East)|
|Period||Approx. 24 hours|
|Attitude Control||Three-axis stabilization (Controlled bias momentum)|