Identifying and Correcting Step Losses in Single-Ended Fiber-Optic Distributed Temperature Sensing Data

Table 2

(a) Calibration, validation, and near-splice metrics from the uncorrected and corrected calibration schemes as applied to the synthetic data set. (b) Calibration, validation, and near-splice metrics from the corrected and uncorrected calibration schemes as applied to the laboratory test data.

(a)

		Uncorrected metrics; of 1440 traces; °C	Corrected metrics; of 1440 traces; °C
Calibration	RMSE	0.023 ± 0.001	0.02 ± 0.001
	Bias	<10^−5	<10^−5
Validation	RMSE	0.09 ± 0.005	0.02 ± 0.002
	Bias	−0.09 ± 0.005	0 ± 0.005
475–499 m	RMSE	0.89 ± 0.005	0.02 ± 0.005
	Bias	0.89 ± 0.005	0.00 ± 0.01
501–525 m	RMSE	0.89 ± 0.005	0.02 ± 0.005
	Bias	−0.89 ± 0.005	0.00 ± 0.01

(b)

		Uncorrected metrics; of 208 traces; °C	Corrected metrics; of 208 traces; °C
Calibration	RMSE	0.10 ± 0.02	0.09 ± 0.02
	Bias	<10^−4	<10^−4
Validation	RMSE	0.20 ± 0.03	0.15 ± 0.05
	Bias	0.14 ± 0.02	0.03 ± 0.03
104–118 m	RMSE	0.38 ± 0.02	0.14 ± 0.04
	Bias	−0.39 ± 0.02	−0.13 ± 0.04
129–144 m	RMSE	0.14 ± 0.02	0.15 ± 0.05
	Bias	0.12 ± 0.02	−0.13 ± 0.06