GLONASS (bahasa Rusia:ГЛОНАСС,IPA: [ɡɫɐˈnas]; bahasa Rusia:Глобальная навигационная спутниковая система,tr.Global'naya Navigatsionnaya Sputnikovaya Sistema), atau "Sistem Satelit Navigasi Global", adalah sistemnavigasisatelit berbasis ruang angkasa yang beroperasi di radionavigasi-satelit.
Sistem ini memberikan alternatif untukGPS dan merupakan sistem navigasi kedua yang beroperasi dengan cakupan global dan presisi yang sebanding.
Segmen kontrol darat GLONASS hampir seluruhnya terletak di bekas wilayahUni Soviet, kecuali beberapa diBrasil.
Segmen tanah GLONASS terdiri dari:
| Location | System control | Telemetry, Tracking and Command | Central clock | Upload stations | Laser Ranging | Monitoring and Measuring |
|---|---|---|---|---|---|---|
| Krasnoznamensk | x | - | - | - | - | x |
| Schelkovo | - | x | x | x | x | x |
| Komsomolsk | - | x | - | x | x | x |
| St-Peteburg | - | x | - | - | - | - |
| Ussuriysk | - | x | - | - | - | - |
| Yenisseisk | - | x | - | x | - | x |
| Yakutsk | - | - | - | - | - | x |
| Ulan-Ude | - | - | - | - | - | x |
| Nurek | - | - | - | - | - | x |
| Vorkuta | - | - | - | - | - | x |
| Murmansk | - | - | - | - | - | x |
| Zelenchuk | - | - | - | - | - | x |
| Satellite series | Launch | Current status | Clock error | FDMA signals | CDMA signals | Interoperability CDMA signals | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1602 + n×0.5625 MHz | 1246 + n×0.4375 MHz | 1600.995 MHz | 1248.06 MHz | 1202.025 MHz | 1575.42 MHz | 1207.14 MHz | 1176.45 MHz | ||||
| GLONASS | 1982–2005 | Out of service | 5×10−13 | L1OF, L1SF | L2SF | ||||||
| GLONASS-M | 2003–2018 | In service | 1×10−13 | L1OF, L1SF | L2OF, L2SF | L3OC‡ | |||||
| GLONASS-K1 | 2011, 2014 | In service | 5×10−14...1×10−13 | L1OF, L1SF | L2OF, L2SF | L3OC | |||||
| GLONASS-K2 | 2018–2024 | Design phase | 5×10−15...5×10−14 | L1OF, L1SF | L2OF, L2SF | L1OC, L1SC | L2OC, L2SC | L3OC | |||
| GLONASS-KМ | 2025– | Research phase | L1OF, L1SF | L2OF, L2SF | L1OC, L1SC | L2OC, L2SC | L3OC, L3SC | L1OCM | L3OCM | L5OCM | |
| "O": open signal (standard precision), "S": obfuscated signal (high precision); "F":FDMA, "С":CDMA; n=−7,−6,−5,...,6 ‡Glonass-M spacecraft produced since 2014 include L3OC signal | |||||||||||
