EARTH EXPLORER USGS
The USGS EarthExplorer (EE) tool allows users to query, search, and order satellite images, aerial photographs, and cartographic products from several sources.
In the satellite image browsing system, we use many websites first one is Earth Explorer USGS (https://earthexplorer.usgs.gov/) and the second is Indian satellite Bhuvan (https://bhuvan.nrsc.gov.in/). We can download satellite images from these websites. Now we will see it step by step.
USER INTERFACE
The USGS Earth Explorer interface uses Google Maps. You can zoom in and out with the mouse wheel as if you are in Google Maps. Google street view is also enabled, where you can drop a marker and get a real view of the location.
First, you’ll have to create an account with USGS. In the top-right corner, click the Register button. As it’s a pretty painless process, you’ll receive instructions to activate your account.
Firstly, go to google search engine. Then type earth explorer USGS and enter for search results. Click on the first search result.
Then you see the earth explorer USGS website interface Includes Enter Search criteria, Polygon, Data sets, Additional Criteria, Results, Map, etc.
Then click on the login
If you have an account, log in with your user ID and password. And if not, create a new account.
For download, a satellite image goes to the Search criteria option. In that option, you see the Geocoder, KML/Shapefile upload, Polygon, Circle, Predefined area, Data range, Cloud cover, and Result option.
The Datasets tab answers the question: What satellite or aerial imagery are you looking for? The USGS Earth Explorer remote sensing datasets are plentiful: aerial imagery, AVHRR, commercial imagery, digital elevation models, Landsat, LiDAR, MODIS, Radar, and more.
It depends on the date and time for which Landsat scene you can download. In the Landsat > Landsat Collection 1 – Level 1 group
After that go to the polygon option and select the area which you want to download. After selecting the area go to the date range option and select the date period.
After that go to the data range and enter the date from which you want the information.
After that go to the Data sets option and select satellite. Select satellite Landsat or Sentinel for free image downloading. Expand the Landsat option, expand Landsat Collection 1 Level-1, and select any Landsat from 1 to 8.
Then go to the Results option and click it. You see some results about the selected area. Go to the footprint option and see the image area. Then see the show brows area option and check the image for better visualization.
In the Results tab, you select the specific imagery you want to download. But it’s good to check the footprint for exactly where that scene is located. You can also preview the data, which can be good to see exactly where clouds are in the image.
After there is a download option near the image that you selected.
Download the data by clicking the “Download” button. If you are going to perform an analysis on the Landsat data, the Level 1 GeoTIFF data product is probably the one you’re after, which will be the largest file size.
After clicking the downloading will be started on the new window. The downloaded file is in zip format. Then go on zip software and extract the downloaded zip file. Then you see the one folder and, in that folder, you see the satellite image in separate bands.
