Compute horizontal distance and slope corrections from survey observations.
平面坐标正算与反算:由两点坐标求距离与方位角,或由一点、距离、方位角求另一点
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Inverse computation | D = sqrt( (x2 - x1)^2 + (y2 - y1)^2 ); alpha = atan2(Δy, Δx) | GB 50026-2020, Code for engineering surveying |
| Forward computation | x2 = x1 + D · cos(alpha); y2 = y1 + D · sin(alpha) | GB 50026-2020, Code for engineering surveying |
| Mutual check | A forward computation followed by an inverse one must reproduce the input | GB 50026-2020, Code for engineering surveying |
| Units and rounding | Round distances to mm or cm and angles to seconds, as the project precision requires | GB 50026-2020, Code for engineering surveying |
距离计算是一款科学研究领域的在线工具。科学研究工具,采用标准科学公式,计算精准。