Rapid and Precise Measurement Method for Track Static Geometry of Large-Span Bridge Railway

Table 4

Statistical parameter changes of residuals before and after fusion in northward direction.

	Max absolute value (mm)	Average (mm)	Standard deviation (mm)	Relative accuracy
Before fusion	34.2	−6.3	7.7	40.3
After fusion	−3.9	−1.6	0.9	2.1