earth online
  • Data
  • Envisat ASAR AP Single-Look Co...

Envisat ASAR AP Single-Look Complex L1 [ASA_APS_1P]

Envisat ASAR Alternating Polarisation Mode Single-Look Complex

Go to Envisat

How To Access Data

EO Sign In Authentication (Open)

  1. Go to the ESA User Services Portal
  2. Find the product you want via a map using the catalogue search
  3. Register or log in to EO Sign In
  4. Download.
Read More

Description

This product is a complex, slant-range, digital image generated from Level 0 data collected when the instrument is in Alternating Polarisation mode. (7 possible swaths). It contains two CO-registered images corresponding to one of the three polarisation combination submodes (HH and VV, HH and HV, VV and VH).

In addition, the product uses the Range Doppler algorithm and the most up to date processing parameters available at the time of processing. It can be used to derive higher level products for SAR image quality assessment, calibration and interferometric applications, if allowed by the instrument acquisition.

A minimum number of corrections and interpolations are performed on the data in order to allow the end-user maximum freedom to derive higher level products. Complex output data is retained to avoid loss of information. Absolute calibration parameters are available depending on external calibration activities and are provided in the product annotations.

Spatial Resolution: approximately 8m slant range x approximately 4m azimuth.

Details

DATA SET SPECIFICATIONS

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
Resolution:
High Resolution - HR (5 - 20 m)

PROCESSING LEVEL

level 1b

APPLICABLE TERMS & CONDITIONS

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

READ T&C

RESOURCES

Auxiliary Data

ASAR auxiliary data

Auxiliary Data

Visit page
Product Specifications

ASAR Products Specification - Revision C

Product Specifications

Download
Product Information

Envisat ASAR Sensor Performance, Products and Algorithms

Product Information

Visit page
Technical Note

Envisat ASAR Science and Applications

Technical Note

Download
User Manual

ASAR Product Handbook

User Manual

Download
Product Specifications

More ASAR Documents

Product Specifications

Visit page
Tools

ASAR Software Tools

Tools

Visit page
ESA Earth Observation User Services Portal

Get Help?

ESA Earth Observation User Services Portal

Visit page
Tweet

newsletter

Subscribe to our newsletter to receive highlights of recent news from Earth Online

Cookies & Privacy

We use cookies which are essential for you to access our website and to provide you with our services and allow us to measure and improve the performance of our website. Please consult our Cookie Notice for further information or to change your preferences.