Mobile version


25.02.2016 11:21 Age: 8 yrs

Saral: three years in orbit!

Category: News of the Saral mission

Following the successful launch of the Saral mission three years ago, the reliability and performances of its Ka-band altimeter have been demonstrated. In the frame of PEACHI project, maps of sea ice extent in Arctic and Antarctic are computed and shown here.

Three years ago, the joint CNES/ISRO mission Saral was successfully launched. It embarks the first radar altimeter in Ka-band (AltiKa) providing new path for investigation in oceanography or for ice studies. These higher frequencies in Ka-band (35.75 GHz instead of 13.6 GHz for Ku-band and 5.3 GHz for C-band) offer higher spatial resolution, with more waveforms samples, so data closer between each other along the satellite ground track (~ every 180 m) and a reduced footprint.

Its 35-day repeat orbit already followed by ERS-1 (1991-2000), ERS-2 (1995-2011) and Envisat (2002-2012) is a great opportunity to extend the repeat observations.

Saral, with a high inclination orbit (at 98.55°) allows an optimal coverage in high latitudes, in the Arctic and the Antarctic. Its measurements  are therefore naturally used for studying the cryosphere. By observing both in high latitudes, on different orbits, the combined use of the AltiKa’s Ka-band and the Ku-band of Cryosat-2 is ideally complementary.


<link internal-link>

Proportion of ice measurements from Saral/AltiKa waveforms classification from Oct.2014 (available by playing the animation). Waveform classification in function of the return echo shape enables to discriminate sea ice from ocean and allows to deduce sea ice extent . Credits CLS/CNES.

Further information:

  • Missions: <link internal-link>Saral
  • Applications: Ice and Cryosphere: <link internal-link>Sea ice extent seen by altimeters


Rss feedsContactPartnersFAQLexiconLegal noticePersonal Data Protection PolicyMobile
You must enable cookies in your browser preferences to save the modifications
You are using an older version of Internet Explorer, please update to take full advantage of Aviso+ features

Customize the home page

View all widgets
Reduce display
Public profile
User profile

Select/Deselect widgets

Discover AVISO+

Customizable home, reading tools, products search guide, etc.. Discover step by step the features of the new site AVISO+.

Customizable homepage

This home page is composed of blocks called "widgets".

Rearrange the blocks with a "Click & Drop".

Hide a widget with the cross at the top right. Reset or add a widget with the "wrench" icon. The "User" and "Public" profiles offer a predefined organization.

All the modifications are automatically saved as cookies on your machine so as to enable you to have your own specific AVISO+.

Reading tools

Ease your reading by choosing the page background colour (black/white) and/or by modifying the font size.

Browsing menu and breadcrum trail

To ease your browsing through AVISO+, you can use at any time the main banner items with the interactive submenus or use the browsing menu on the left side of the screen (it is open by default). For more readiness of the page contents, you can fold and unfold the browsing menu by clicking on the tab. At any time you can know where you are thanks to the browsing menu or the breadcrum at the top of the page.

Products search guide

The first submenu of the "Data" banner item leads you to a new search form enabling you to find quickier the product that suits your needs. The list of results is updated according to your selection criteria.

AVISO+ Multimedia

The first submenu of the "Multimedia" banner item leads you to AVISO+ collections of images and videos linked to altimetry and its applications. Have a nice visit!