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- Envisat ASAR IM Single Look Co...
Envisat ASAR IM Single Look Complex L1 [ASA_IMS_1P]
Envisat ASAR Image Mode Single Look Complex Level 1
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How to Access Data
EO Sign In Authentication (Open)
- Go to the Dissemination Service
- Find the product you want via a map using the catalogue search
- Register or log in to EO Sign In
- Download.
The ESA (A)SAR On-The-Fly (OTF) data processing and dissemination service allows end-users to gain direct access to the (A)SAR archive from the ERS-1, ERS-2 and Envisat Missions.
The data is collection based and allows data browse and download through the treeview as well as via geographical catalogue search based on area of interest and metadata. Interferometric search option is available for relevant collections. Data download is available via HTTPS, including bulk download functionality. ESA internal users can use their ESAAD account.
Envisat products can also be discovered through ESA's EO Catalogue (EO CAT), which allows users to browse and download products among the available datasets from ESA and Third Party Missions and instruments, using various criteria (Spatial, temporal).
For information on the (A)SAR On-The-Fly service please refer to the OTF FAQ page.
New users can register an account on EO Sign In. For further information about the EO Sign In Service you can visit TellUs.
Should you need support to access the data, please contact EOHelp.
Collection Description
This data product represents a single-look, complex, slant-range, digital image generated from Level 0 ASAR data collected when the instrument is in Image Mode. Seven possible swaths in HH or VV polarisation are available. The product is primarily intended for use in SAR quality assessment and calibration or applications requiring complex SAR images such as interferometry, and can be used to derive higher level products.
The spatial coverage is about 100 km along track per 56 - 100 km across track, and the radiometric resolution is 1 look in azimuth, 1 look in range. The file size is 741 Mbytes. It is worth highlighting that Azimuth pixel spacing depends on Earth-Satellite relative velocity and actual PRF and slant range pixel spacing is given by ASAR sampling frequency (19.208 Mhz).
Auxiliary data include: Orbit state vector, Time correlation parameters, Main Processing parameters ADS, Doppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, Geolocation Grid ADS, SQ ADS.
Spatial Resolution: Approximately 8m slant range x approximately 4m azimuth.
Technical Details
DATA SET SPECIFICATIONS
PROCESSING LEVEL
APPLICABLE TERMS & CONDITIONS
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Resources
ASAR auxiliary data
Auxiliary Data
ASAR Products Specification - Revision C
Product Specifications
Envisat ASAR Sensor Performance, Products and Algorithms
Product Information
Envisat ASAR Science and Applications
Technical Note
ASAR Product Handbook
User Manual
More ASAR Documents
Product Specifications
ASAR Software Tools
Tools
ENVISAT Software tools
Software Tools
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