So here's the request: it would be nice to have a tool that could do this correction (smoothing out) of the GPS data automatically, using as "reference" an identical GPS track generated by a route creation tool such as Strava or RideWithGps. You take a GPS device out on your ride to capture where you went. This process can be very time consuming, especially when dealing with a GPS file from a long route. Im just using GPS (rather than GPS + Galileo) and got the following elevation values for a typical commute home from work: Elev gain 128 Elev loss175 Min Elev-78 Max Elev-17 When using the elevation correction in Garmin Connect the figures change to: Elev gain 112 Elev loss158. Imagine going up a climb with a steady grade of 5-6% and all of a sudden there is a "wall" of 15% or more! To fix this problem, the person creating the virtual route should manually correct the GPS data, looking for GPS data points where the elevation value went wacko, and correcting the values. Yep, the altitude recorded by my Edge 130 is weird as well. Excellent turn by turn directions and excellent details. Photos taken while logging a ride can be embedded into the route. Upgraded to paid version so that my wife (and friends) can track my rides in real time.
This elevation value is used to compute the grade, so having bad elevation values leads to spikes in the grade level, which makes riding the virtual route on a smart trainer not just inaccurate, but unpleasant as well. Logs my ride, shows me stats, gives me audible turn by turn directions, shows me the elevation profile. We all know that if you record the same ride with multiple devices, such as a Garmin Edge, Wahoo Elemnt, Strava iPhone app, etc.) you can get quite different GPS data, especially when it comes to the elevation value. In any case, it is extremely unwise to overly depend on the altitude readout of a GPS. When you finish recording a ride, you can always go back to it to check your cycling pace or to see the information on the elevation of the route.
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Garmin even programed some models of gps to guess at the. Horizontal accuracy of +/- 5 meters and altitude accuracy of +/- 10 meters (relative to the WGS-84 geode) with suitable DGPS receivers and low cost GPS receivers such as the Garmin GPS-12XL can be expected. Elevate your ride experience using the world’s most trusted mobile route planner, audible voice navigation, shareable live tracking and free global community heatmap. The problem though is that the final quality of the virtual route depends pretty much on the quality and accuracy of the GPS data used. Depending on the model, programing, location, sky view, and many other problems the accuracy varies. One of the cool features of a virtual riding platform such as Rouvy is that anyone can create a virtual ride from the video footage and GPS track of an activity.
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