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Fig. 4 | Animal Biotelemetry

Fig. 4

From: Acoustic positioning in a reflective environment: going beyond point-by-point algorithms

Fig. 4

Test track performed on August 4th 2016, resulting from the different methods: VPS (a), HPE filter (b), good performance filter (c), bad performance filter (d) and YAPS (e). The gray line represents the ground truth, measured by a high-precision GPS. The green line connects positions calculated for the V13 test transmitter, the blue dashed lined connects positions (with smaller dots) for the V7 test transmitter. The dots are shaded according to their accuracy: darker shades green or blue indicate larger deviations from the GPS position. The gray polygon marks the contour of the receiver array

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