QGIS 4 Arch - Satellite Remote Sensing with Sentinel-2 (SCP, NDVI, Band Combos, Raster Calculator)

QGIS4Arch is a free online course for learning QGIS, an open source geographic information system (GIS) software package. This course is for those who works with cultural heritage resources, including archaeologists, architectural historians, and historians. The course is designed to take you from beginner to expert. New tutorials uploaded weekly until complete. This video uses QGIS Latest Release version 3.12.

This lessons explores the use of the Semi-Automatic Classification Plugin (SCP) to download satellite imagery, common band combinations, and calculating NDVI. This includes working with the raster calculator.

2024 UPDATE: The Semi-Automatic Classification Plugin may not work immediately after installing. If this is the case, and you are using a Windows computer please use the following instruction:
1. Press or access the start menu and type "OSGeo Shell" and presss enter to open a command prompt (a black window). 
2. Copy the following: pip3 install --upgrade remotior-sensus scikit-learn torch
3. Paste this into the command prompt and press the Enter key.
Unfortunately, this fix may not work on Mac computers. You can install on Linux with the qpip plugin.

Updated Sentinel-2 Data Link to Update SCP - https://scihub.copernicus.eu/dhus/

Can't get SCP to download Sentinel-2, go here - https://earthexplorer.usgs.gov/ (it does have a 1-2 week versus the above website, but is a good workaround if needed)

Timestamps
0:10 – Topics for this lesson.
0:50 – Introducing multispectral satellite imagery.
2:28 - Installing the Semi-Automatic Classification Plugin (SCP).
4:21 - Downloading Sentinel-2 imagery with the SCP.
9:19 - Common Sentinel-2 band combinations.
16:02 - Calculating NDVI with Sentinel-2 data.
19:53 - Importance of comparing data for analysis.

Links
SCP Plugin Manual (refer to chapter 4 for section on multispectral satellites) https://fromgistors.blogspot.com/p/us...
Landsat 8 Info – Ushttps://www.usgs.gov/land-resources/n...
Sentinel-2 Info - https://sentinel.esa.int/web/sentinel...
Common Band Combinations for Landsat 7 and 8 and Sentinel-2 – https://anthroyeti.net/QGIS4Arch/Band...