This paper discusses and investigates the effects of mobility on positioning of wireless ad hoc networks. We present a Mobility-enhanced Ad hoc Positioning (MAP) scheme, where we leverage on the mobility of nodes within the network. The scheme uses the hop counts information from fixed reference nodes to perform positioning and improves accuracy by using mobile nodes to “bridge” gaps within nei...

The integration of Global Positioning System (GPS) real-time kinematics (RTK) and an inertial navigation system (INS) has been widely used in many applications, such as mobile mapping and autonomous vehicle control. Such applications require high-accuracy position information. However, continuous and reliable high-accuracy positioning is still challenging for GPS/INS integration in urban enviro...

This paper presents an indoor positioning system based on FM radio. The system is built on commercially available short-range FM transmitters. This is the first experimental study of FM performance for indoor localisation. FM radio possesses a number of features, which make it distinct from other localisation technologies. Despite the low cost and off-the-shelf components, this FM positioning s...

This work proposes context aware handover algorithms for mobile positioning systems. The algorithms perform handover among positioning systems based on important contextual factors related to position determination with efficient use of battery. The proposed solution is implemented in the form of an Android application named Locate@nav6. The performance of the proposed solution was tested in se...

Combining a variety of positioning technologies and making use of their respective advantages, this paper presents a strategy of seamless positioning. With this method, the positioning system can be used for both indoor and outdoor environments, and it can solve the problems which most LBS applications cannot locate in some circumstances. The paper also designs a new indoor positioning algorith...

Wireless ad-hoc sensor networks (WASN) are attracting research interest recently because of their various applications in distributed monitoring, communication, and computing. In this paper, we concentrate on the range error problem of WASN positioning algorithms. A new matrix pencil based time of arrival (TOA) positioning method (MPP) is proposed for WASN. The new scheme employs matrix pencil ...

Friction in a DC servo positioning system is the main challenge to accurate positioning performance. If it can be accurately estimated, the positioning accuracy can be enhanced. Extensive research literature exists on friction modelling and estimation. The contribution of this work is a simulation-based method for estimating not only friction but also the transfer function of the system in whic...

RECENT YEARS have seen rapidly increasing demand for services and systems that depend upon accurate positioning of people and objects. This has led to the development and evolution of numerous positioning systems. This chapter provides an overview of the main positioning techniques: time of arrival ( TOA ), direction of arrival ( DOA ), and received signal strength indicator ( RSSI ). It then i...

In this paper we present a set of simple models to predict the performance of underwater positioning solutions for autonomous underwater vehicles (AUVs). Improvements in underwater navigation continue to contribute to the expansion of our capability for exploration, scientific discovery and environmental monitoring. Despite the diversity instruments and algorithms employed to improve performanc...