I have a large set of collected GPS points that I'm pulling into Arcgis from SQL and creating an xy event layer to then map them. The fields for the points are as follows: recorded, lat, long, altitude, speed, hAccuracy, vAccuracy.
Overall the points are fairly accurate, but of course there are a few cases where the accuracy is off by quite a bit. I have worked with differential correction before, but it was with the same software/hardware (Trimble/Pathfinder) used to collect the data.
Is it possible to correct the points after I have created a shapefile? If not, is it possible to correct with the Pathfinder software them before I bring them into GIS? I also realize that if in fact I can correct them I will have to pull use multiple base files as the GPS points collected are over multiple dates.
Any ideas or help is greatly appreciated!