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These were the instructions I followed to complete georeference.
Add the reference layer into ArcGIS Pro. I added it as a Raster Dataset. I was provided the reference layer of Fort Douaumont, France. In ArcGIS Pro, scroll and find the area of reference on the map. Click ‘Fit to Display’This allows the raster layer to be placed with the current map display.Under the georeference tab, in the adjust group, begin adding control points. First, click on a location on the raster and then find the exact location on the current map and click on it. I did a spline transformation, which is a minimum of 10 control points. After adding all 10 control points, determine any inaccurate points. I did this by viewing the Control Point Table. I had none so therefore I was able to continue. If there were any, I could delete or adjust certain points. Save as New This creates a raster file with the georeferencing information. Create a Feature Class for the control points. This was for the control points to be viewable on the grid layout. Create a grid layout.
Georeference
Introduction
Georeferencing is the process of determining real-world coordinates, with latitude and longitude, for rasters or digital maps. This is done so that the alignment accurately matches geographic data that can be integrated within GIS. This process is done by matching identifiable features on a map or image with their known coordinates on the reference map. This is essential in GIS for spatial accuracy, data integration, temporal comparison, digitization, and more.
Resources used and layer provided
For this map, I used ArcGIS Pro, a geographic information system (GIS) software. In addition, I used a reference layer of Fort Douaumont, France. In ArcGIS Pro, I was able to georeference a layer from this reference layer.
Figure 1. Location of Fort Douaumont, France
[insert image of reference layer]
Steps/Process
Final Product
Summary
Georeferencing is critical to many industries, including UAS, by transforming raw imagery into readable and interpretable data. It eliminates the need for ground control points, increases data processing efficiency, and allows for precise mapping, navigation, and analysis. Getting introduced to and practicing georeferencing will allow me to develop the technical skills necessary to accurately align spatial data, improve the reliability of geospatial products, and apply these techniques effectively in real-world UAS operations.
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