Adjust differential leveling observations.
输入各测段高差观测值及测站数(或距离),按测站数比例分配闭合差,计算平差后高差。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Height difference | Height difference h = backsight reading - foresight reading | GB 50026-2020, Code for engineering surveying |
| Closure error | The closure error is fh = sum h - (H_end - H_start) | GB 50026-2020, Code for engineering surveying |
| Distribution by station count | Correction v_i = -fh · n_i / sum n, proportional to station count or distance | GB 50026-2020, Code for engineering surveying |
| Tolerance | The closure must stay within the code tolerance; otherwise re-survey | GB 50026-2020, Code for engineering surveying |