25.4 TRACKING IN WHSNs
25.4.1 Problem Statement
Previous work mainly aims at event detection and tracking in wireless homogeneous sensor networks, in which a considerable number of one type of sensors equipped with the same sensing units are deployed. In addition, the event formed by only one attribute is mainly concerned. Due to the limitation of sensing capability, the existing approaches are obviously unsuitable for the event, which is a compound of multiple attributes and any one of the attributes cannot be perceived by only one type of sensor. Without loss of generality, a network composed of various types of sensors is called the WHSN.
Figure 25.9 Illustration of a WHSN, in which two attribute regions, 
a1 and a2, exist and form event region, e1. The circle and the square sensors are able to, respectively, perceive attributes a1 and a2.
Figure 25.9 illustrates an example of a WHSN, in which two types of sensors, circle and square sensors, are assumed to be capable of sensing the concentrations of chlorine and hydrogen, respectively. Consider a tracking application in which the hazardous ...
Get Mobile Intelligence now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
