Abstract: Wireless sensor networks arc one of new technologies in recent years and target tracking in the networks is one of the research emphases. The binary sensor networks are becoming more attractive due to the low cost deployment, small size, low energy consumption and simple operation and data communication of the sensors. hherefore, it is taken into consideration in target tracking. The methods availably used in target tracking of binary wireless sensor network can be cataloged into two classes,piecewise linear approximation based method and particle filter based method.The current research results were analytically presented, and the future work was also pointed out.

Key words: Binary sensor networks, Tracking, Piecewise linear approximation, Particle filter