But, more often it is due to the provider Google got the data from not accurately processing their imagery data. if my waypoint is indeed accurate. When you download a Google Earth image using AirPhotoSE, 5 calibration points are written to a calibration file automatically. Where do I place the track points? http://fileupster.com/google-earth/how-accurate-is-google-earth-gps.html
Login or register to post comments Sun, 10/19/2014 - 8:42am jgermann 6 years Ah! This is not unexpected. In an attempt to answer your question, there really is only one error associated with placing a pushpin in Google Earth. Google Earth seems to be five or so feet out of alignment with my waypoint... https://productforums.google.com/d/topic/maps/6K294uFlRmU
Holy smokes, you're complaining about a 5 foot error? Neither of which work. I’m hoping to continue the above discussion on how to create accurate workable POI files considering the inherent flaws in GE / EPE, GPS position accuracy and user interpretation.
related books, as well as writing material for other genres. Back to top of the page up there ^ #6 OpenTrackRacer GPS Junkie Group: +Premium Members Posts: 141 Joined: 10-February 08 Posted 08 April 2008 - 07:16 PM That sounds Your GPS will get you within 10 feet on a really good day (there's always the chance you'll get lucky and nail it right on). All image screenshots from Google Earth are Copyright Google All other trademarks appearing here are the trademarks of their respective owners.
I'll have to mess around a little more. Accuracy Of Google Earth Any known point used for searching in the Find by Coordinates search dialogue may be used, but accuracy differs. 1) Differential GPS or RTK measurement in the field of a highly Correction using the method described below can improve things, but high precision is not possible if the area is large. http://www.gearthblog.com/blog/archives/2014/03/fix-errors-google-earth.html I realize this is putting too fine a point on the process.
When these circles don’t overlap, the compounded error is the distance between the centers of the two circles. ... Login or register to post comments home | top of page | forum areas Navigation Recent posts Active forum topics Keeping The Windmill Alive - Your Last Trip? – October 2016What That error is around 30 feet in most of North America. The problem is far more noticeable when trying to create an accurate track or waypoint in a file for use with a hand held unit where there are no terrestrial or
Shopping at Amazon through any of the links below helps keep this site up and running. It becomes significant for larger areas, so try to zoom the Google image to enclose the smallest possible area required. How Accurate Is Google Earth Gps Coordinates This requires the use of the full OSGB coordinates in Easting and Northing. Accuracy Of Google Maps For articles on Android geography apps and topics, visit my other site: AndroGeoid Translate Topics 3D visualization (1) 3DEM (13) Android (5) ArcINFO (2) AutoCAD (6) blogkeeping (6) cartography (107) coordinate
I could take the "X marks the spot" coordinates from Google Earth in this case if I wanted to. Search Subscribe Subscribe to this blog's RSS Feed. I came across a map error in Google Earth while working with EPE on a POI file in rural WV. have a peek here I was a little surprised and the differences I saw.
A magnifying window will appear when you move the mouse below the menu area. Since my jeep is about 5 feet wide and my GPSr bracket is mounted on the center console on the passenger side, which by my estimation was about 7-8 feet from You are saying that the error can be "amplified" by the placement of the coordinates that the POI file compiler chooses plus the positioning error of the GPS device.
I've seen imagery alignment problems on the order of 50 feet, more in Google Maps than in Google Earth; for some weird reason they seem to have different imagery or alignment. The position errors are caused by GE, not EPE itself. Do not use any other search option, and do not zoom into the image with mouse wheel. Blog Finding It Support This Site Privacy RTI Viewer Test direct Downloads About Contact Me « Importing GPS Data Into Google Earth I - Proprietary software and EasyGPS Importing GPS Data
This post has been edited by table/cache: 10 April 2008 - 10:24 AM Back to top of the page up there ^ Forum Home Geocaching HQ Communications |-- Announcements |-- Release When you go out to find your pushpin waypoint, you and your GPSr are at the center of another imaginary circle. If you have a high resolution GeoPortal which covers the region of interest, you can usually obtain better accuracy by using the coordinates shown in the GeoPortal window. Check This Out The location I'm using is easily seen on the satellite views.
The error can be viewed without GE or EPE by going here: http://3planeta.com/evaluate.html and entering the coordinates in the search box. Back to top of the page up there ^ #12 oxothuk Geocacher Group: Members Posts: 28 Joined: 13-October 07 Posted 09 April 2008 - 05:03 PM Like others have said I think it is alignment errors when they join the maps. Contents Google Earth: Improving Accuracy Google Earth images do not have photogrammetric accuracy.
That's the default all around for your GPS and GE. Related posts: Positional Accuracy In Google Maps "My Maps" Vs. I’m curious how other file creators who use GE / EPE handle these factors and if any have seen map errors of the above magnitude. The other error occurs when using a GPSr to find that waypoint.
Exactly how does a single waypoint error "compound"? Then save a second point at the same location. Overall, Google Earths position accuracy in North America compared to WGS 84 datum is quite impressive at a reported +/- 30 feet. the one about "serious nerd" My answer would be -80.544887,39.286329.
He previously taught as an instructor and has written courseware for IT training courses. Back to top of the page up there ^ #11 robertlipe Chief Babel-Head Group: Moderators Posts: 5071 Joined: 23-December 01 Posted 08 April 2008 - 10:53 PM Coords loaded in Login or register to post comments Sun, 10/19/2014 - 7:20am bdhsfz6 8 years Exactly The lack of visual reference is the reason accuracy is important in creating POI files for off Due to image quality, the problem is not visually evident in earlier imagery but the coordinate error still exists.
So in areas of extreme topography, images won't be "stretched" properly to fit the terrain. Does anyone have any clues? Generated Sat, 15 Oct 2016 18:22:21 GMT by s_ac5 (squid/3.5.20) Holy smokes, you're complaining about a 5 foot error?