Uragan-M [NPO PM]
Uragan-M spacecraft are the second generation of GLONASS satellites with an increased lifetime of 7 years following up the first generation Uragan spacecraft.
GLONASS (Globalnaya Navigationnaya Sputnikovaya Sistema, Global Orbiting Navigation Satellite System) is a Russian space-based navigation system comparable to the American GPS system, which consists of Uragan spacecraft. The operational system contains 21 satellites in 3 orbital planes, with 3 on-orbit spares. GLONASS provides 100 meters accuracy with its C/A (deliberately degraded) signals and 10-20 meter accuracy with its P (military) signals.
The Uragan-M spacecraft are 3-axis stabilized, nadir pointing with dual solar arrays. The payload consists of L-Band navigation signals in 25 channels separated by 0.5625 MHz intervals in 2 frequency bands: 1602.5625 - 1615.5 MHz and 1240 - 1260 MHz. EIRP 25 to 27 dBW. Right hand circular polarized. On-board cesium clocks provide time accuracy to 1000 nanoseconds. A civil reference signal on L2 frequency was added after the completion of flight testing of Glonass-M in 2004 to substantially increase the accuracy of navigation relaying on civil signals.
The spacecraft can be launched in triplets using Proton-K Blok-DM-2, Proton-K Briz-M, Proton-M Blok-DM-2 or Proton-M Blok-DM-03 boosters. Single launches on Soyuz-2-1b Fregat boosters are also planned. At some time within a collaboration on the GLONASS system signed with India 2013, at least one single launch using an Indian GSLV Mk.2C was also planned, but never conducted.
The Urgan-M satellites are being replaced by the smaller Uragan-K and Uragan-K2 satellites.
Nation: | Russia |
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Type / Application: | Navigation |
Operator: | |
Contractors: | NPO Prikladnoi Mekhaniki (NPO PM) |
Equipment: | ? |
Configuration: | 3-Axis stabilized Uragan-M bus |
Propulsion: | ? |
Power: | 2 deployable solar arrays, batteries |
Lifetime: | 5 years |
Mass: | 1415 kg |
Orbit: | 19100 km × 19100 km, 64.8° (typical) |
Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
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Kosmos 2382 (Uragan-(M) #1, GLONASS-(M) №711) | 2001-053A | 01.12.2001 | Ba LC-81/24 | Proton-K Blok-DM-2 | with Kosmos 2380 (Uragan #78), Kosmos 2381 (Uragan #79) |