HSB
The Humidity Sounder for Brazil (HSB), a 4-channel microwave sounder provided by Brazil aimed at obtaining humidity profiles throughout the atmosphere. The HSB is the instrument in the AIRS/AMSU-A/HSB triplet that allows humidity measurements even under conditions of heavy cloudiness and haze. The HSB provided high quality data until February 2003.
Instrument Characteristics
- Multi-channel passive radiometer for humidity profiling, consisting of four channels: 1 at 150 GHz, 3 at 183 GHz .
- Provides atmospheric water vapor profile measurements.
- Responsible Agency: Brazilian National Institute for Space Studies.
| Instrument Facts | |
| Responsible Center: | Jet Propulsion Laboratory |
| Heritage: | Advanced Microwave Sounding Unit-B (AMSU-B) |
| Swath: | 1650 km |
| Spatial Resolution: | 13.5 km at horizontal at nadir |
| Mass: | 66 kg |
| Power: | 85 W (average), 154 W (peak) |
| Duty Cycle: | 100% |
| Data Rate: | 4.2 kbps |
| Thermal Control By: | Radiator |
| Thermal Operating Range: | 0-40° C |
| Field of View (FOV): | ±49.5° cross track from nadir (+90° to -49.5° for calibration) |
| Instrument Instantaneous FOV: | 1.1° |
| Pointing Requirements (platform+instrument, 3σ) | |
| Control: | 3600 arcsec |
| Knowledge: | 360 arcsec |
| Stability: | 74 arcsec/sec |
| Jitter: | TBD |
| Physical Size: | 73 x 69 x 47 cm |
