  In this paper some modifications are proposed to optimize an algorithm of
object tracking in wireless sensor network (WSN). The task under consideration
is to control movement of a mobile sink, which has to reach a target in the
shortest possible time. Utilization of the WSN resources is optimized by
transferring only selected data readings (target locations) to the mobile sink.
Simulations were performed to evaluate the proposed modifications against
state-of-the-art methods. The obtained results show that the presented tracking
algorithm allows for substantial reduction of data collection costs with no
significant increase in the amount of time that it takes to catch the target.
