[13] 地球上の距離の計算には、 地球の形を考慮する必要があります。 地球は球に近い回転楕円体のような形をしています。
[3] Google Maps API では google.maps.geometry.spherical.computeDistanceBetween
で2つの座標の間の距離を得られます。
この関数は地球を球に近似しています。
[14] Strava は複数の方法で得た距離のいずれかを使っています >>2。
[2] How Distance is Calculated – Strava Support ( ()) https://support.strava.com/hc/en-us/articles/216919487-How-Distance-is-Calculated
[8] Why is Strava showing different data than my Garmin? – Strava Support () https://support.strava.com/hc/en-us/articles/216919737-Why-is-Strava-showing-different-data-than-my-Garmin-
[9] Option to disable Strava smoothing algorithm on imports – Strava Support () https://support.strava.com/hc/en-us/community/posts/115000116490-Option-to-disable-Strava-smoothing-algorithm-on-imports
[10] 同じMoveなのにStrava上とMovescount上とで表示される数値が異なるのはどうしてですか? () https://www.suunto.com/ja-jp/Support/faq-articles/movescount/why-does-my-move-show-different-values-in-strava-than-in-movescount/
[11] How Distance is Calculated – Strava Support () https://support.strava.com/hc/en-us/articles/216919487-How-Distance-is-Calculated
[12] Why is my activity's distance different than my friend's? – Strava Support () https://support.strava.com/hc/en-us/articles/115001188624-Why-is-my-activity-s-distance-different-than-my-friend-s-
[1] Wikitravel:Measurements - Wikitravel ( 版) http://wikitravel.org/en/Wikitravel:Measurements
[5] 緯度経度から2点間の距離を求める | ぷちのいず ( ()) http://petit-noise.net/blog/%E7%B7%AF%E5%BA%A6%E7%B5%8C%E5%BA%A6%E3%81%8B%E3%82%892%E7%82%B9%E9%96%93%E3%81%AE%E8%B7%9D%E9%9B%A2%E3%82%92%E6%B1%82%E3%82%81%E3%82%8B/
[15] 距離と方位角の計算 計算式 () https://vldb.gsi.go.jp/sokuchi/surveycalc/surveycalc/algorithm/bl2st/bl2st.htm
[16] TrailNote : 2地点間の距離の計算 () http://www.trail-note.net/tech/calc_distance/
[17] Vincenty solutions of geodesics on the ellipsoid in JavaScript | Movable Type Scripts (Chris Veness, www.movable-type.co.uk著, ) http://www.movable-type.co.uk/scripts/latlong-vincenty.html
[18] Geo::Direction::Distance - Process between Lat-Lng coordinates and direction - distance - metacpan.org () https://metacpan.org/pod/Geo::Direction::Distance
[7] Why Every GPS Overestimates Distance Traveled - IEEE Spectrum () https://spectrum.ieee.org/tech-talk/at-work/test-and-measurement/why_every_gps_overestimates_distance_traveled
[20] Matsup's blog: GPS 経路データから求めた距離の誤差について, , http://matsup.blogspot.com/2016/06/gps_14.html