Emerging New Trends in Hybrid Vehicle Localization Systems

Drawil, Nabil; Basir, Otman

doi:10.5772/29446

Cited by 3 publications

(1 citation statement)

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“…Fusion of different localization techniques has been proposed in order to improve localization accuracy and provide reliable quantification of the accuracy of estimates made by different sources [ 17 ]. The authors claim that having enough knowledge about several localization techniques can enable the system to choose the best suitable technique or ensemble techniques for the current time, situation, application and objective.…”

Section: Related Workmentioning

confidence: 99%

Improving Localization Accuracy: Successive Measurements Error Modeling

Ali

Abu-Elkheir

2015

Sensors

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Vehicle self-localization is an essential requirement for many of the safety applications envisioned for vehicular networks. The mathematical models used in current vehicular localization schemes focus on modeling the localization error itself, and overlook the potential correlation between successive localization measurement errors. In this paper, we first investigate the existence of correlation between successive positioning measurements, and then incorporate this correlation into the modeling positioning error. We use the Yule Walker equations to determine the degree of correlation between a vehicle’s future position and its past positions, and then propose a p-order Gauss–Markov model to predict the future position of a vehicle from its past p positions. We investigate the existence of correlation for two datasets representing the mobility traces of two vehicles over a period of time. We prove the existence of correlation between successive measurements in the two datasets, and show that the time correlation between measurements can have a value up to four minutes. Through simulations, we validate the robustness of our model and show that it is possible to use the first-order Gauss–Markov model, which has the least complexity, and still maintain an accurate estimation of a vehicle’s future location over time using only its current position. Our model can assist in providing better modeling of positioning errors and can be used as a prediction tool to improve the performance of classical localization algorithms such as the Kalman filter.

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Section: Related Workmentioning

confidence: 99%