ABSTRACT
Location based services make use of the position information from mobile devices to provide related services. The number of large-scale buildings such as shopping malls, airports, museums and exhibition halls has been rapidly increasing due to the growth in urban populations. It is difficult for people to find their own locations, directions and friends in such areas. Therefore, indoor localization systems can be lifesavers in countless circumstances. Indoor localization also finds its significant application in manufacturing to facilitate using robots. As artificial intelligence has been an emerging technique in recent years, using robots to replace human beings is an interest shared by some industries. In this way, production is increased, information of producing process is secured and some operations that are harmful for human involvement can be accomplished safely. For indoor environments, signals suffer severely from multipath reflections where the accuracy of time information is largely affected and the positioning performance is heavily degraded.
