Small-Range High-Precision Positioning Based on Two-Point Coordination for Robot

Table 3

RMSE of different algorithms in different numbers of interpolation points.

RMSE (m)	Interpolation numbers
	0	9	19
RMSE (square)	3.8983	1.6520	0.0184
RMSE (circle)	3.6459	1.5649	0.0104
RMSE (asterisk)	3.5430	0.0092	0.0072
RMSE (cross)	3.4758	0.0084	0.0068