Fig. 1. Schematic diagram of wMPS measurement principle

Fig. 2. Angle measurement model

Fig. 3. Influence of plane model deviation on measurement accuracy

Fig. 4. Schematic diagram of nonparametric model calibration

Fig. 5. Calculation principle of spatial angle combination

Fig. 6. Calculation principle of spatial angle of point to be measured

Fig. 7. Spatial angle intersection measurement model

Fig. 8. Experimental scene of nonparametric model calibration experiment scene

Fig. 9. Nonparametric calibration results of transmitters. (a) Transmitter 1; (b) transmitter 2

Fig. 10. Experimental scene of space intersection measurement

Fig. 11. Coordinate measurement error comparison. (a) Experiment 1; (b) experiment 2; (c) experiment 3