Compute angles from measured directions and reduce them to observed values.
支持方向观测法与复测法,计算角度均值、精度指标并检核盘左盘右差
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Face-left and face-right mean | beta = ( L + (R ± 180°) ) / 2, cancelling collimation error | GB 50026-2020, Code for engineering surveying |
| 2C value | 2C = L - ( R ± 180° ), used to check collimation error | GB 50026-2020, Code for engineering surveying |
| Direction observation method | Average directions over several sets and check the closure of each set | GB 50026-2020, Code for engineering surveying |
| Angular units | 1° = 60' = 3600''; degree-minute-second is accepted for use with the SI | ISO 80000-1:2009, Quantities and units - Part 1: General |
支持方向观测法与复测法两种测量方式,计算角度均值、标准差、标准误差与平差角,并检核盘左盘右2C互差及观测较差。