Sentinel-1A
Model of a Sentinel-1 satellite (radar antenna missing)
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| Mission type | Earth observation |
|---|---|
| Operator | ESA |
| COSPAR ID | 2014-016A |
| SATCAT no. | 39634 |
| Website | Sentinel-1 (ESA) |
| Mission duration | Planned: 7 years Elapsed: 3 years, 3 months, 14 days |
| Spacecraft properties | |
| Spacecraft type | Sentinel-1 |
| Bus | Prima |
| Manufacturer |
Thales Alenia Space EADS Astrium |
| Launch mass | 2,300 kg (5,100 lb) |
| Dry mass | 2,170 kg (4,780 lb) |
| Dimensions | 3.4 m × 1.3 m (11.2 ft × 4.3 ft) |
| Power | 5900 watts |
| Start of mission | |
| Launch date | 3 April 2014, 21:02:31 UTC |
| Rocket | Soyuz-STA/Fregat |
| Launch site | Kourou ELS |
| Contractor | Arianespace |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous |
| Apogee | 693 km (431 mi) |
| Inclination | 98.18 degrees |
| Period | 98.6 minutes |
| Repeat interval | 12 days |
| Epoch | planned |
| Transponders | |
| Band |
S Band (TT&C support) X Band and Optical laser through EDRS (data acquisition) |
| Bandwidth | 64 kbit/s upload (S Band) 128 kbit/s - 2 Mbit/s down (S Band) 520Mbit/s down (X Band/Optical) |
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Sentinel-1A is a European radar imaging satellite launched in 2014. It is the first Sentinel-1 satellite launched as part of the European Union's Copernicus programme. The satellite carries a C-band Synthetic Aperture Radar which will provide images in all light and weather conditions. It will track many aspects of our environment, from detecting and tracking oil spills and mapping sea ice to monitoring movement in land surfaces and mapping changes in the way land is used.
Copernicus is the long-term European Union Earth observation and monitoring programme under the former name of GMES (Global Monitoring for Environment and Security) and established by a Regulation that entered into force in 2014. It is a user-driven programme under civil control, which will notably encompass the launch of six families of dedicated, EU-owned earth observation satellites and instruments - the so-called Sentinels - and the ramp-up of the 6 Copernicus Services in the fields of atmosphere-, marine- and land-monitoring, climate change, emergency management and security. Copernicus data and services are available on a full, open and free-of charge basis to users, including EU institutions, Member States' authorities, the private sector for the development of commercial downstream applications and services, international partners, the global scientific community, and interested citizens. It provides multi temporal Synthetic Aperture Radar images with a temporal gap of 12 days. Data products can be used for SAR Interferometry applications. Data downloads can be done through sentinel data hub . Sentinel 2 mission outputs are also available in the same data hub.
Sentinel-1A arrived at its launch site in Kourou, French Guiana on 25 February 2014, ahead of its launch which was at the time planned for 28 March.
Sentinel-1A was launched on 3 April 2014 by a Soyuz rocket at 21:02:31 GMT (23:02:31 CEST). The first stage separated 118 seconds later, followed by the fairing (209 s), second stage (287 s) and the upper assembly (526 s). After a 617-second burn, the Fregat upper stage delivered Sentinel into a Sun-synchronous orbit at 693 km altitude. The satellite separated from the upper stage 23 min 29 s after liftoff.
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Wikipedia