![]() ![]() The further you are from the centre of the imaginary zero line the greater the error in lining up the imagery. Very small error indeed, but it will be there.Īlso google uses a web mercator to project its data of the earth and line up the imagery. Your measurements will get worse compared to googles just because of continental drift over time. So when you PPP’ed your base, most likely to WGS84, there is a time element the “epoch” that transforms measurements taken in WGS84 at different times. Start reading the Emlid forum and research Datums. I do now have access to a friend with a trimble survey rod, and would be able to get a reference with his system to get a more accurate location for my antenna location.Īny help would be appreciated, I’d rather spend another week adjusting the files, on my laptop, than spend the time and money remapping all of the fields once the base location has been fixed. It would be nice to not have to use RTK and an internet connection to do certain tasks, but with this much discrepancy, that is not achievable. Obviously once I have an RTK Fix, everything is fine. Either outside the boundry or another pass width inside the field. Before I receive an RTK fix, and if I am driving close to the boundry, it is clear on agopen that I am not where I am supposed to be.When I open the KML file, it is clearly about 15ft off of the google maps overlay.This took a week and roughly 3 tanks of fuel… I made the mistake of trusting that data, without checking it… SO I proceeded to map all of the roughly 286 fields that I have. Well, turns out that my ‘exact’ location is roughly 15 feet off towards the south west. When I set up my base, I use the post processing method, where you record your gps data for 24 hrs, send it in to be processed, and you’ll receive a precise point of your antenna to a few millimeters. Does any one know how to shift the location of a polygon (field boundary) in a KML file? I have an issue that doesn’t really need to be resolved, but my ADHD says I must resolve it. ![]()
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