This is a question that many hikers using GPS devices ask when they obtain summit heights that are different from information online. Gérard Lachapelle, Professor Emeritus, Department of Geomatics Engineering, University of Calgary is trying to get some answers. Thank you Gérard for the following blog.
E very so often we get an email or a comment on the accuracy of our trail distances, and when we track down the cause of the discrepancy find that the problem relates to incorrect odometer (distance) displays on the users GPS receiver and/or poor track logs that have not been “cleaned up”. Let’s look [...]
Discussion on Odometer inaccuracy in Garmin handheld GPS receivers.
While some areas of Kananaskis Country look very good when viewed in Google Earth other areas show up as a mess of low-resolution blobs. Why is this?