How Download Radar Image free from Sentinels

If you want to download Sentinel satellite data, then you’ve come to the right place.
 One of the most exciting developments in remote sensing at this time is the European Space Agency’s Copernicus Programme.Copernicus’ six Sentinel satellites collects comprehensive pictures of our land, ocean, emergency response, atmosphere, security and climate change to understand the health of our planet. Until very recently, this data has become available to the public at no cost Today, we show you step-by-step how to download Sentinel satellite data:

Sentinels Scientific Data Hub

In 2014-15, Sentinel-1 and Sentinel-2A were successfully launched from Europe’s Spaceport in French Guiana.
One Sentinel scene after the other, data has been rolling out on a user interface called the Sentinels Scientific Data Hub.
It’s now available for the public to access.
But you will have to hop through a couple of hoops before you can get your fingers on it.
Follow these steps to download free Sentinel satellite data:

Step 1: Create a User Account

Go to Sentinel S2 Operation Data HUB

In the top-right of the webmap, click the  LOGIN button.
USERNAME: guest

PASSWORD : guest

Step 2: Select Your Area of Interest

Where is your study area?
Using the  SEARCH CRITERIA  text box in the top-left, type in your area of interest.
In our example, we’ve typed Germany. Click Enter twice.
From here your search will yield results for all the Sentinel satellite data available.
Sentinel-1 (Synthetic Aperture Radar C-Band) swaths are depicted in red. Sentinel-2 (multispectral data) swaths are depicted in green.

Step 3: Download Sentinel Data

Now, that we have our user account created with our study area defined – all we have to do is sift through the results and download our chosen Sentinel data.
As we are working with large data sets, you will have to be patient with download speeds. It’s easy for the server to timeout during the download.
Select the product you want to download. S1A is Sentinel-1A. S2A is Sentinel-2A.
Below the product thumbnail that has the download URL. This is what you want to clip in order to download your chosen Sentinel data.

What’s Next?

After you download Sentinel satellite data, chances are that you are going to want to display it in the visible spectrum. This is exactly how our eyes see objects around us.
Each image is separated by their respective spectral band. See our table below for the spectral bands of Sentinel 2. Sentinel 2B will be identical to Sentinel 2A.
If you want to combine the red, green and blue channels as composite bands (such as Google Earth imagery) – read our composite bands tutorial.
…Or maybe you’d like to perform an NDVI analysis in ArcGIS or an image classification.
You now have free satellite data from Sentinel to help you.

What are the Spectral Bands of Sentinel 2A and 2B?

We’ve listed below, the spectral and spatial resolution of Sentinel 2A. There are 13 bands in total. Four spectral bands have a 10 meter resolution. Six bands have a 20 meter resolution. And the remaining 3 have a spatial resolution of 60 meters.
Here are the spectral band details for Sentinel 2A:

Band	Resolution	Central Wavelength	Description
B1	60 m	443 nm	Ultra blue (Coastal and Aerosol)
B2	10 m	490 nm	Blue
B3	10 m	560 nm	Green
B4	10 m	665 nm	Red
B5	20 m	705 nm	Visible and Near Infrared (VNIR)
B6	20 m	740 nm	Visible and Near Infrared (VNIR)
B7	20 m	783 nm	Visible and Near Infrared (VNIR)
B8	10 m	842 nm	Visible and Near Infrared (VNIR)
B8a	20 m	865 nm	Visible and Near Infrared (VNIR)
B9	60 m	940 nm	Short Wave Infrared (SWIR)
B10	60 m	1375 nm	Short Wave Infrared (SWIR)
B11	20 m	1610 nm	Short Wave Infrared (SWIR)
B12	20 m	2190 nm	Short Wave Infrared (SWIR)

Source: SENTINEL-2 Spatial Resolution
Each single satellite revisit time is 10 days. Because there are two satellites (Sentinel 2A and 2B), this means it has a combined constellation revisit of 5 days.