Table 1 Performance measures on fixed transmitter positioning for the different filtering techniques (VPS-NF, no filtering; HPE, 75%-quantile HPE as threshold; good p., only positions from good performing receiver clusters; bad p., removing positions from bad performing clusters) and for YAPS positioning
From: Acoustic positioning in a reflective environment: going beyond point-by-point algorithms
| Â | VPS-NF | HPE | Good p. | Bad p. | YAPS |
|---|---|---|---|---|---|
Fixed transmitters | |||||
% positions kept | 100 | 77 | 76 | 79 | 131 |
% positions on land | 17 | 8 | 18 | 18 | 2 |
N positions on land | 159,412 | 57,610 | 125,045 | 126,572 | 27,238 |
Min error (m) | 0 | 0 | 0 | 0 | 0 |
Mean error (m) | 2.6 | 1.9 | 1.1 | 1.3 | 0.8 |
Median error (m) | 1.1 | 0.9 | 0.8 | 0.8 | 0.4 |
95%-quantile error (m) | 8.4 | 5.5 | 2.8 | 3 | 3 |
99%-quantile error (m) | 32.4 | 21.5 | 4.1 | 5.7 | 6.6 |
Max error (m) | 254.2 | 167.8 | 141.8 | 219 | 18.6 |