Algorithm 1: OMCT

Input: measured RSSI $z,$ channel frequency f, anchor node coordinates u

Output: optimal target node coordinates $\hat{\mathit{r}}$

1. Set the parameters of MOEA

2. Initialize AKF

3. Utilize AKF to filter $z$ and acquire filtered RSSI $\tilde{z}$

4. Compute signal wavelength $\mathsf{\lambda }$ based on f

5. Generate N decision vectors $\mathit{x}$ by MOEA

6. $t\leftarrow 1$

7. $t_{\max }\leftarrow \mathrm{total}\hspace{0.33em}\mathrm{number} \mathrm{of} \mathrm{generations}$

8. while $t\le t_{\max }$ do

9.      Calculate N g1 according to $\mathit{x}$, $\tilde{z}$ and $\mathsf{\lambda }$

10.      Compute N corresponding g2 via $\mathit{x}$, $\mathit{u}$

11.      Produce new N $\mathrm{x}$ by MOEA based on g1 and g2

12.      $t\leftarrow t+1$

13. end while

14. Select r of first $\mathit{x}$ in Pareto front with ascending g1 as $\hat{\mathit{r}}$

15. return $\hat{r}$