GRAS performance
| Measured temperature accuracy | 1K |
|---|---|
| Number of occultation channels (set + rise) | 4 |
| Number of navigation channels | 8 |
| Number of occultations per day | 500 |
| Horizontal resolution | 100 to 300 km |
|
Vertical resolution Fresnel zone (stratosphere, troposphere) |
300 to 1500 m |
| High Vertical resolution (troposphere) | 100 m |
| Navigation solution accuracy | 100 m |
| USO frequency stability | 1 x 10-12 |
| Bending angle budget @ 30 km | 0.42 mrad |
| Mass | 26 kg |
|---|---|
| Power | 37 W |
| Data rate (mean, max) |
27 kb/s 60 kb/s |
| Occultation antennas | |
| Gain | 9 to 10 dBi |
| Elevation angle | -25.5 to -28.3° |
| Azimuth angle | ± 55° |
| Navigation antenna | |
| Gain | -4 to +7 dBi |
| Elevation angle | 15 to 90° |
| Azimutz angle | 360° |
Last update: 28 June 2006
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