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Radarsat-1 satellite imagery
Radarsat-1 engineered under the supervision of CSA Canadian Space Agency in cooperation with a number of commercial companies was launched on November 4, 1995 from Vandenberg Air Force Base, California into sun-synchronous orbit of 798 km altitude and 98.6° declination. Radarsat-1 is fitted with synthetic aperture side-viewing radar providing unique swath width modification and spatial resolution. The radar images the Earth in the Ñ-band with 5.6 cm wavelength and horizontal polarization HH in 10 - 60° angular range. Active lifetime was estimated as 7 years. However the satellite is still successfully operated in orbit. Users all over the world can order the imagery of 50 - 500 km width and 8 - 100 m spatial resolution. International distribution of Radarsat-1 imagery is provided by MDA (MacDonald, Dettwiler and Associates Ltd.).
Radarsat-1 satellite imagery applications
- Observing natural hazards (floods, ice movements, etc.) regardless of weather and time.
- Monitoring of fast-growing impacts to ecology (oil pollution extension, fragile and pest forest detecting, etc.)
- Forestry and agriculture monitoring: mapping, use control, illegal logging assessment, etc.
- Ice and snow assessment.
- Creation and refreshing of topographical maps and special plans up to 1:50 000 scale.
- DEM and DSM high resolution creation (up to 5-10 meters height accuracy).
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Basic characteristics:
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Planned launch date: December 2007 |
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Spectral bands (mkm): |
5.6 сm (С-band) |
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Mode: |
Swatch Width |
Resolution
Range x Azimuth |
Survey angular region |
Polyrisation |
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Fine |
50 km |
8 x 8 m |
30° - 50° |
HH and HV
or
VH and VV |
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Standard |
100 km |
25 x 26 m |
20° - 49° |
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Wide |
150 km |
30 x 26 m |
20° - 45° |
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ScanSAR Narrow |
300 km |
50 x 50 m |
20° - 46° |
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ScanSAR Wide |
500 km |
100 x 100 m |
20° - 49° |
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Extended Low |
170 km |
40 x 26 m |
10° - 23° |
HH |
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Extended High |
75 km |
18 x 26 m |
49° - 60° |
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Fine Quad-pol |
25 km |
12 x 8 m |
20° - 41° |
HH, VV, HV, VH |
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Standard Quad-pol |
25 km |
25 x 8 m |
20° - 41° |
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Ultra-Fine |
20 km |
3 x 3 m |
30° - 40° |
One of: HH/HV/VH/VV |
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File format: |
CEOS, GeoTIFF upon request |
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Processing: |
Radiometric, sensor and geometric correction,
mapped to a cartographic projection - depending on processing level |
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Revisit time: |
From 2-3 days in ecquator within 500 km swatch width,
depending on mode and type of survey |
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Order implementation: |
1-14 days for archive data
2-30 days for new order |
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Minimum order area: |
One square scene with the length equal to swath width for any mode | |
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