I need to convert (lat,long,height)points into a cartesian system for an area as small as 40kmx40km or even 10kmx10km. I'm currently using the UTM projection, but there are some issues regarding accuracy and distortion. The good thing with UTM is that GDAL library easily do the math via python coding.
My professor told me 'plano topográfico local' (in Portuguese) would be a good option. The bad thing is that I have no idea of the EPSG code for this system in order to use GDAL. Any ideas?