Geographic Referencing and Datums
Geographic Referencing and Datums We are going to look at a variety of Geographic Datums and we were provided with several examples of how improper use of datums can ruin UAS datasets. We are going to deliberately work with a Ground Control Point file that is bad on several levels. We are going to work with a less-than-ideal file since sometimes the best way to see what not to do is to experience the problem. That is, rather than give you a nice and clean, tidied up data set, we are going to work with something more along the lines you can expect to experience at some point or, at the very least, to prevent from occurring ahead of time by informing those doing the flight and ground control work what information you need. The file we were provided is called GCP's_Ellip soid. The concept of metadata is important because then we don’t have to speculate on what the information and units are. We don’t have to guess and it’ll give us what we need ...