Compute the bearing (azimuth) between two points from their coordinates.
输入北向增量 ΔN 与东向增量 ΔE,求方位角(0–360°)。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Inverse azimuth | alpha = atan2(ΔE, ΔN), where ΔN and ΔE are the north and east differences | GB 50026-2020, Code for engineering surveying |
| Quadrant determination | Use the signs of ΔN and ΔE to fix the quadrant | GB 50026-2020, Code for engineering surveying |
| Horizontal distance | D = sqrt( ΔN^2 + ΔE^2 ) | GB 50026-2020, Code for engineering surveying |
| Range | Azimuth is measured clockwise from north, ranging from 0° to 360° | GB 50026-2020, Code for engineering surveying |