Modeling of Location Estimation for Object Tracking in WSN

Algorithm 2

Algorithm of the proposed location estimation model.

(1) //When Object O into the Sensing Filed

(2) //The set of Sensor nodes 𝑆={𝑠₁,𝑠₂…,𝑠_𝑖}  detect Object 𝑂

(3) //The set of neighbor nodes 𝑁={𝑛₁,𝑛₂…,𝑛_𝑗}  detect Object 𝑂

(4) for (𝑎=1; 𝑎≤𝑖;𝑎++)

(5)  if 𝑑𝑖𝑠𝑡(𝑂,𝑠_𝑎)<𝑅

(6)  𝑠_𝑎 Send enlarge(ID) to one-hop neighbors;

(7)   end if

(8)  Broadcast notice(ID);

(9)  Broadcast contend(ID, dist(sink, 𝑠_𝑎));

(10) if dist(sink, 𝑆+𝑁−𝑠_𝑎) < dist(sink, 𝑠_𝑎) then

(11)  𝑠_𝑎.State = give up;

(12) else

(13)  𝑠_𝑎.State = cluster;

(14) end if

(15) if 𝑠_𝑎.State = cluster then

(16)  Send cluster(ID) to 𝑆+𝑁−𝑠_𝑎;

(17) else if dist (𝑂,𝑠_𝑎) < 𝑅

(18)   Send Mposition(Cluster, ID) to Cluster;

(19) else

(20)   Send Nposition(Cluster, ID) to Cluster;

(21) end if

(22) if 𝑠_𝑎.State = cluster then

(23)   Send all information to sink;

(24) end if

(25) end for