Sentinel-1 satellites mix radar vision

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The twin Sentinel-1 satellites have – for a initial time – total to uncover their capability for divulgence even tiny deformations in Earth’s surface.

Following a orbital manoeuvres, a recently launched Sentinel-1B satellite reached a designated circuit position on 15 June.

Sentinel-1’s initial interconnected interferogram

Sentinel-1’s initial interconnected interferogram

The satellite is now orbiting Earth 180° detached from a twin, Sentinel-1A, during an altitude of roughly 700 km. With both satellites finally in a same orbit, together they can cover a whole creation each 6 days.

The two-satellite ‘radar vision’ goal for Europe’s Copernicus programme carries an modernized radar to yield an all-weather, day-and-night supply of imagery of Earth’s surface.

It has now been demonstrated that destiny images acquired by a span can be joined to detect slight changes occurring between scans.

This technique is quite useful for generating accurate maps of aspect deformation over far-reaching areas, such as those caused by tectonic processes, volcanic activities or landslides.

It is also an ideal apparatus for monitoring glacier upsurge and changes in Arctic and Antarctic ice shelves.

Radar scans combined

Radar scans combined

Sentinel-1’s initial such interconnected ‘interferogram’ total a Sentinel-1A indicate over southern Romania on 9 Jun with a Sentinel-1B merger over a same area only one day before reaching a aim circuit position.

Another interferogram over northwest Romania was constructed shortly after Sentinel-1B reached a final orbit.

The prismatic patterns are associated to topography, and they denote that a dual satellites’ matching radars are accurately synchronised, indicating in a same instruction and that a satellites are in their scold orbits.



Once commissioning is finished in mid-September, a span will be prepared to broach information for a systematic and slight monitoring of Earth aspect deformation and ice dynamics.

“After a good success of generating a initial radar picture reduction than 3 days after liftoff, we am really happy to news another superb success as it is a era of a initial interferograms with Sentinel-1B on a same day that we reached a orbital position, 180° detached from Sentinel-1A,” pronounced ESA’s Sentinel-1 plan manager, Ramón Torres.

“It is of peerless significance to a goal that we have demonstrated, during a initial try, that a dual Sentinel-1 satellites work really good together.”

Source: ESA