Ghosts in the data: false detections in VEMCO pulse position modulation acoustic telemetry monitoring equipment

Table 3 Correlation coefficient values between daily numbers of Type A false detections and receiver performance metrics

Placement	Receiver	Pings	Detections	Code detection efficiency	Rejection coefficient	Noise quotient
D21	101,715	0.157	0.165	0.022	−0.030	−0.109
D21	101,717	0.169	0.184	0.010	0.070	−0.067
D54	101,713	0.082	0.037	−0.072	0.074	−0.099
D54	101,714	0.207	0.102	−0.166	0.109	−0.142
U78	101,718	−0.114	−0.297	−0.433	0.441	−0.064
U78	101,711	0.062	0.049	−0.006	0.045	−0.028
D78	101,710	−0.495	−0.558	−0.558	0.522	0.350
D78	101,712	−0.327	−0.422	−0.458	0.487	0.324

ISSN: 2050-3385