Why does my watch show a different distance than my buddies’ even though we ran the same route? Except in rare cases, it really doesn’t matter,” Heikes pointed out. “In most products, we do not take elevation changes into account in the distance calculations. The bottom line is that, in most cases, the amount of distance lost using a 2D instead of 3D measurement is likely a small fraction of a percent. While a 10-percent grade may not sound like much, that would be because one has not actually tried to run a mile up a 10-percent grade!” “A quick mathematical check shows that a 10-percent grade over one mile creates only an additional eight meters of distance as compared to one mile over a flat. Heikes provided some numbers to illustrate his point. “However, I think customers should understand that, for the vast majority of runners, there is very little benefit to this measurement.” How much distance is lost if elevation isn’t taken into account?Įvidently, not much. “We’re putting a barometer in more and more of our wearable products because it enables the ‘floors climbed’ feature,” Heikes said. 2D distance,” Lund explained to Digital Trends.
What about elevation?Įlevation information is available via GPS just like horizontal position, but Lund and Garmin Product Manager Joe Heikes says the data is typically very noisy, and usually calculated through a website or app using a digital elevation model.įor more accurate elevation readings, many fitness watches use barometric altimeters to measure the pressure changes at different elevation levels during your workout, providing real-time data on elevation change. These metrics give runners real-time insight into their running performance,” Lund added.
#How can i use the watch the forest series
“By integrating GPS technology in a fitness or sports watch, the watch measures a series of points that are used to accurately derive metrics like distance, speed, and pace. That process gets repeated with satellites that sit further away from the watch receiver, which pins down its exact location and continues to track the receiver throughout the activity. The difference between sending and receiving a GPS signal determines how far away the satellite is,” explained Dan Lund, Product Marketing Manager of TomTom, to Digital Trends. “Triangulation is a way to determine the difference between the time that your running watch receives a GPS signal and the time that GPS signal was sent to your running watch. Your fitness watch uses GPS - or Global Positioning System - to determine your exact location through a process called triangulation. To get to the bottom of these mysteries, we asked top experts in the fitness watch industry to explain the quirks and complexities of these wearables so you - the user - has the best experience out in the field. No matter the details, at some point you’ve probably looked at the fitness device strapped to your wrist and wondered, “What the hell is going on in there, anyway?” Or, perhaps you’re celebrating after a race and notice your buddies’ watches displaying slightly different distances than your own. SuuntoYou’re laced up and ready to go but your GPS watch has you impatiently jogging in place while it searches for a signal.
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