ALOS 2
| ALOS 2 | |
|---|---|
| Type: | Earth observation satellite |
| Country: |
 Japan
|
| Operator: |
 JAXA
|
| COSPAR-ID : | 2014-029A |
| Mission dates | |
| Dimensions: | 2120 kg |
| Begin: | May 24, 2014, 03:05 UTC |
| Starting place: | Tanegashima LA-Y |
| Launcher: | H-II A F-24 |
| Status: | active |
| Orbit data | |
| Rotation time : | 97.4 min |
| Orbit inclination : | 97.9 ° |
| Apogee height : | 644 km |
| Perigee height : | 637 km |
ALOS 2 ( Advanced Land Observing Satellite ) is a Japanese earth observation satellite that orbits the earth on a sun-synchronous orbit. It provides data for cartography , environmental protection and disaster management . With ALOS 2, Japan participates in the International Charter on Space and Natural Disasters .
It succeeds its predecessor ALOS , which was canceled on April 22, 2011.
Data
The energy supply is 5.2 kW ( EOL ), so a service life of 5 to 7 years is planned. The satellite flies over the same locations in a cycle of 14 days.
payload
The main payload is an L-Band Synthetic Aperture Radar PALSAR-2 (Phased Array L-Band Synthetic Aperture Radar) with the following properties:
- High resolution mode:
- Frequency : L-band (1257.5 MHz, corresponding to 22.9 cm wavelength or 1236.5 / 1278.5 MHz)
- Polarization : Single (HH, VV or HV), Double (HH + HV or VV + VH) and Full (HH + HV + VV + VH)
- Resolution : 3/6/10 m
- Swath width : 50 or 70 km
- Off-nadir angle: 8–70 °
- ScanSAR mode:
- Frequency: L-band (1257.5 MHz, corresponding to 22.9 cm wavelength or 1236.5 / 1278.5 MHz)
- Polarization: single and double
- Resolution: 100 m
- Swath width: 350 or 490 km
- Off-nadir angle: 8–70 °
- Spotlight mode:
- Frequency: L-band (1257.5 MHz, corresponding to 22.9 cm wavelength)
- Polarization: single
- Resolution: 3 × 1 m
- Swath width: 25 × 25 km
- Off-nadir angle: 8–70 °