Algorithm 1

Require the target area P, the distance λ between neighbor virtual RPs in $D{B}^{sample}$ the number m of RPs we want to select.

Ensure select RPs every λ meters in P to build $D{B}^{sample}$

Ensure randomly select $R{P}_e$ from $D{B}^{sample}$, $D{B}^{\left(v\right)}=\left\{R{P}_e\right\}$

While($|D{B}^{\left(v\right)}|\ne m$)

For all($R{P}_i\subset D{B}^{sample}$)

Calculate $Di{s}_i$ using Equation (1)

End all

$RP=arg{\displaystyle \underset{R{P}_i\in D{B}^{sample}}{min}}Di{s}_i$

$D{B}^{\left(v\right)}\leftarrow RP$

EndWhile