Compact High Resolution Imaging Spectrometer (CHRIS)
CHRIS provides remotely-sensed multi-angle data at high spatial resolution and in superspectral/hyperspectral wavelengths. The instrument has a spectral range of 415-1050 nm, and provides observations at 19 spectral bands simultaneously, with a spatial resolution of 20 m at nadir and a swath width of 14 km. CHRIS is on board ESA's PRoject for On-Board Autonomy (PROBA). The PROBA satellite is on a sun-synchronous elliptical polar orbit since 2001 at a mean altitude of about 600 km. CHRIS coverage for the SMAPEx study area is summarised below. CHRIS data can be downloaded from ESA.
Source: http://www.lamma.rete.toscana.it, access on 30th, Oct. 2011
Mission |
CHRIS |
Sensor |
Compact High Resolution Imaging Spectrometer |
Spacecraft |
PROBA |
Launch date |
22nd, Oct. 2001 |
Design life |
>2 years |
Orbit |
Sun synchronous orbit, RAAN 10:30. |
Spacecraft operations control centre |
ESA's Ground Segment Department |
Accuracy (arcsec) |
1.413 (L-band; 21cm) |
Waveband (nm) |
415-1050 |
Incidence angle(°) |
±55, ±36, 0 |
Swath (km) |
14 |
Spatial resolution (m) |
20 at nadir |
Temporal resolution |
Approximately 7 days |
The CHRIS overpass times for the SMAPEx study area have been determined from a Fortran program based on the NORAD data, and are provided in the table below. Date and time are in UTC.
●=full CHRIS coverage of airborne box; ○=partial CHRIS coverage
●=concurrent; ●=non concurrent
No coverage was found during 4th-8th December, 2010.