BD-3 M (Type 1) (original) (raw)
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BD-3 M [CAST]
BD 3M (Beidou 3M) satellites are the MEO component of the 3rd phase of the chinese Beidou (Compass) satellite navigation system, which, in contrast to GPS and GLONASS, uses both geostationary satellites and satellites in intermediate orbit.
This series provides the satellites for the intermediate constellation called "Compass-M" in 12-hours orbits. Ulitmately, the MEO constellation will comprise 27 satellites.
The 3rd phase intermediate orbit satellites are based on an dedicated bus, not on the DFH-3 Bus as the earlier BD-2M satellites. They feature a phased array antenna for navigation signals and a laser retroreflector. As they have no apogee propulsion system, they require the launch vehicle to perform the final orbit insertion.
The third phase MEO satellites can be launched as single stellites on a CZ-3C/G3Z with additional dispenser stage, two at a time on a CZ-3B/G3Z with additional dispenser stage or four at a time on a CZ-5 with additional dispenser stage.
| Nation: | China |
|---|---|
| Type / Application: | Navigation |
| Operator: | CNSA |
| Contractors: | CAST |
| Equipment: | ? |
| Configuration: | |
| Propulsion: | |
| Power: | 2 deployable solar arrays, batteries |
| Lifetime: | 12 years |
| Mass: | 1014 kg ? |
| Orbit: | 21519 km × 21545 km, 55.26� |
| Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks |
|---|---|---|---|---|---|
| BD-3 M1-S (Beidou 18) | 2015-037A | 25.07.2015 | Xi LC-2 | CZ-3B/G3Z | with BD-3 M2-S |
| BD-3 M2-S (Beidou 19) | 2015-037B | 25.07.2015 | Xi LC-2 | CZ-3B/G3Z | with BD-3 M1-S |
| BD-3 M1 (Beidou 24) | 2017-069A | 05.11.2017 | Xi LC-3 | CZ-3B/G3Z | with BD-3 M2 |
| BD-3 M2 (Beidou 25) | 2017-069B | 05.11.2017 | Xi LC-3 | CZ-3B/G3Z | with BD-3 M1 |
| BD-3 M3 (Beidou 28) | 2018-018A | 12.02.2018 | Xi LC-2 | CZ-3B/G3Z | with BD-3 M4 |
| BD-3 M4 (Beidou 29) | 2018-018B | 12.02.2018 | Xi LC-2 | CZ-3B/G3Z | with BD-3 M3 |
| BD-3 M5 (Beidou 33) | 2018-062A | 29.07.2018 | Xi LC-3 | CZ-3B/G3Z | with BD-3 M6 |
| BD-3 M6 (Beidou 34) | 2018-062B | 29.07.2018 | Xi LC-3 | CZ-3B/G3Z | with BD-3 M5 |
| BD-3 M13 (Beidou 37) | 2018-072A | 19.09.2018 | Xi LC-2 | CZ-3B/G3Z | with BD-3 M14 |
| BD-3 M14 (Beidou 38) | 2018-072B | 19.09.2018 | Xi LC-2 | CZ-3B/G3Z | with BD-3 M13 |
| BD-3 M17 (Beidou 42) | 2018-093A | 18.11.2018 | Xi LC-3 | CZ-3B/G3Z | with BD-3 M18 |
| BD-3 M18 (Beidou 43) | 2018-093B | 18.11.2018 | Xi LC-3 | CZ-3B/G3Z | with BD-3 M17 |
| BD-3 M23 (Beidou 47) | 2019-061A | 22.09.2019 | Xi LC-2 | CZ-3B/G3Z | with BD-3 M24 |
| BD-3 M24 (Beidou 48) | 2019-061B | 22.09.2019 | Xi LC-2 | CZ-3B/G3Z | with BD-3 M23 |