Acoustic Signal NLOS Identification Method Based on Swarm Intelligence Optimization SVM for Indoor Acoustic Localization

Table 2

Accuracy comparisons of different localization methods.

Localization method (one random anchor point is added)	Average positioning accuracy of all eight coordinates (m)
① No NLOS identification and the following processing are used	3.25
② SVM+D-S evidence [25]	0.22
③ Maximum likelihood estimation method after NLOS identification [4, 5] [13]	0.19
④ Eliminate the only one NLOS acoustic signal after NLOS identification (ZKLocPro system in this paper)	0.12