I want to do some distance calculations in ArcGIS, but it is always calculating in degrees. I think the only way to make it measure my distances in meters is to change the data and the data frame to an appropriate projection? (I have set the map properties to meters already.) However, I do not know which projection to choose. I am looking at an area that is roughly at 31.0309° N, 103.1831° E. I have read somewhere else that UTM is good, but Arc offers so many different UTM projections that I was lost again. I think the UTM grid should be 48.
Is anybody able to suggest a specific coordinate reference system that I can try? Thanks ever so much in advance.