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Envisat ASAR AP Medium Resolution L1 [ASA_APM_1P]

Envisat ASAR Alternating Polarisation Medium Resolution Image

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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. Data download is available via HTTPS, including bulk download functionality. ESA internal users can use their ESAAD account.

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.

Description

This ASAR Alternating Polarization Medium Resolution Image product has been generated from Level 0 data collected when the instrument was in Alternating Polarisation Mode. The product has lower geometric resolution but higher radiometric resolution than ASA_APP and contains one or two co-registered images corresponding to one of the three polarisation combination sub modes (HH and VV, HH and HV, VV and VH).

This product has been processed using the SPECAN algorithm and contains radiometric resolution good enough for ice applications and covers a continuous area along the imaging swath.

The ASAR AP L0 full mission data archive has been bulk processed to Level 1 (ASA_APM_1P) in Envisat format with the IPF-ASAR processor Version 6.03.

Spatial Resolution: 150 m ground range x 150 m azimuth.

Details

DATA SET SPECIFICATIONS

Digital Object Identifier (DOI):
Spatial coverage:
90 N, -90 S, -180 W, 180 E
Temporal coverage:
2002-11-15 - 2012-04-08
Date of launch:
2002-03-01
Operators:
ESA
Mission status:
Completed
Orbit height:
800 km
Orbit type:
Sun-synchronous
Swath width:
5 - 1150 km

PROCESSING LEVEL

Level 1b

APPLICABLE TERMS & CONDITIONS

Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions.

READ T&C

DATA CITATION

European Space Agency, 2021, Envisat ASAR Alternating Polarization Medium Resolution L1 Product. IPF Version 6.03.0.

RESOURCES

Auxiliary Data

ASAR Auxiliary Data

Auxiliary Data

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Product Specifications

ASAR Products Specification - Revision C

Product Specifications

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Product Information

Envisat ASAR Sensor Performance, Products and Algorithms

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Technical Note

Envisat ASAR Science and Applications

Technical Note

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User Manual

ASAR Product Handbook

User Manual

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ASAR Products Anomalies

ASAR Product Quality Disclaimer

ASAR Products Anomalies

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Product Specifications

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Tools

ASAR Software Tools

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