ALOS PRISM Data
- 3 panchromatic telescopes giving stereoscopic views
- 2006 - 2011
- Worldwide coverage (on the ALOS satellite)
- Products may have originated from different JAXA processor versions
ALOS PRISM data is available as:
- Level 1A: Reconstructed, unprocessed signal data with radiometric- and geometric-correction coefficients appended but not applied.
- Level 1B1: Data are radiometrically calibrated.
- Level 1B2: Data are radiometrically calibrated and geometric-correction applied. Data can be processed either geo-referenced or geo-coded.
PRISM data was provided in CEOS format. More detailed product descriptions are available from the JAXA website.
ALOS PRISM Technical Details
|Observation Band||0.52-0.77 µm|
|Number of Optics||3 (Nadir, Forward, Backward)|
|Scanning Method||Push Broom|
|Base-Height Ratio||1.0 (Forward to Backward)|
|Spacial Resolution||2.5 m (at Nadir)|
|35km (Triplet mode)|
|70 (Nadir only, wide-swath mode)|
|Pointing Angle||± 1.5° (Triplet Mode, Cross-track direction)|
|Observation Mode 1||Triplet observation mode using Forward, Nadir, and Backward Views. Swath width is 35km.|
|Observation Mode 2||Nadir view with 70km swath width and Backward view with 35km swath width.|
|Observation Mode 7||Nadir view with 35km swath width.|
PRISM cannot observe areas beyond 82 degrees south and north latitude.
Read more on the JAXA website.
ALOS PRISM Summary
PRISM Panchromatic Remote-Sensing Instrument for Stereo Mapping
PRISM consists of three panchromatic telescopes for forward, nadir, and backwards viewing. The stereoscopic views will be used to create highly accurate digital elevation models, while the 2.5m resolution will permit the production of orthorectified imagery.
PRISM can provide land coverage and land-use classification maps for monitoring regional environments. Additionally, the instrument has a cross track pointing capability useful for disaster monitoring.