Algorithm 1. A joint algorithm based on “multi-sensor, multi-position” case.

Input: (x1k, …, xmk), yk, tk, apk, k = 1,2,…,n, Cmin

Output: Ci, Calibration parameter $\mathsf{\Delta }{x}_i$

1: Compute the estimated value ${\overline{x}}_k$ through Equation (13)

2: Compute ${\sigma }_{ik}^2$ and weight wik through Equations (14) and (15)

3: Compute the intra-cluster fusion value ${\widehat{x}}_k$ through Equation (16)

4: Compute the confidence level Cik of the portable sensor through Equation (17)

5: Compute the overall confidence level Ci through Equation (18)

6: If Ci > Cmin

$\mathsf{\Delta }{x}_i=x_{ik}-{\widehat{x}}_k$

End If