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The UNAVCO GeoEarthscope SAR Archive obtains data files from
ESA
and the Alaska Satellite Facility (ASF).
January 7, 2009
Scene and Frame Counts in the Archive
A "scene" is one unbroken sequence of SAR signal, of any length, in a single data file.
The "frame" counts are based on 15 seconds of SAR signal per frame.
| Mission |
Total scenes |
scenes from ESA |
scenes from ASF |
|
Total frames |
frames from ESA |
frames from ASF |
| ERS1 | 5023 | 3236 | 1787 | | 14378 | 3722 | 10656 |
| ERS2 | 19068 | 12211 | 6857 | | 35817 | 13925 | 21892 |
| Envisat | 4384 | 4384 | 0 | | 8860 | 8860 | 0 |
| RSAT1 | 10930 | 0 | 10930 | | 47421 | 0 | 47421 |
| Total | 39405 | 19831 | 19574 | | 106476 | 26507 | 79969 |
Data Volume in the Archive
| Mission |
GB from ESA |
GB from ASF |
Total GB |
| ERS1 |
651 GB |
1729 GB |
2381 GB |
| ERS2 |
1948 GB |
3445 GB |
5394 GB |
| Envisat |
1152 GB |
0 GB |
1152 GB |
| RSAT1 |
0 GB |
8394 GB |
8394 GB |
| Total |
3751 GB |
12568 GB |
17321 GB |
Archive data volume is
16.5 TB
Scene Maps by Mission (June 4 2009)
ERS1
ERS2
Envisat
Radarsat
(May 23, 2008) postscript version of plot
Google Earth KMZ Files of Archived SAR Scene Footprints
Detail of UNAVCO ERS2 Scenes in Google Earth for southern California
Open these KMZ files (links below) in Google Earth to see footprints and labels of archived SAR scene holdings.
You can use Google Earth to zoom in to scene locations and archive details.
You can use the
GeoEarthscope Archive Search Tool to create smaller KMZ files of scenes in areas of interest to you.
KMZ files for Google Earth
ERS1 scenes 6146 scenes
ERS2 scenes; 00 to 35 North 2003 scenes
ERS2 scenes; 35 to 40 North 6031 scenes
ERS2 scenes; 40 to 45 North 4549
ERS2 scenes; 45 to 55 North 3258
ERS2 scenes; 55 to 78 North (Alaska) 6673
Envisat scenes
KML files for RSAT:
RSAT1 scenes, 00 to 43 North
RSAT1 scenes, 43 to 58 North
RSAT1 scenes, 65 to 75 North
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