Study of Hybrid Localization Noncooperative Scheme in Wireless Sensor Network

Algorithm 3

Hybrid algorithm.

Procedure Anchor nodes(An)

   Repeat

     Each An sends their information, including ID’s, Position Coordinates and Level RSS

  Until finish

End procedure

procedure  SourceNode()

   repeat

  receive broadcast information (IB)

until finish

   if ;

      record IB for whole

     if (IB ≥ threshold packet); packets =

     500

     Calculate average of RSS and as PLE

     else

     Discard IB;

     end if

    else

      Discard record;

end if

procedure weight()

repeat

    compute the according to (12);

until finish

procedure EstimationPosition (EP)

repeat

    compute the EP according to (13);

until finish

end procedure