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The Hybrid Method of ToA and TDoA Using MHP Pulse in UWB System  

Hwang, Dae-Geun (인하대학교 정보통신대학원)
Hwang, Jae-Ho (인하대학교 정보통신대학원)
Kim, Jae-Moung (인하대학교 정보통신대학원)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.10, no.1, 2011 , pp. 49-59 More about this Journal
Abstract
Recently, ToA and TDoA estimation are favorable among all of estimation techniques because they have the best accuracy in estimating position. ToA and TDoA estimation are typical techniques based on time. So, it is important to have the time syncronization and offset between a target node and several reference nodes. If they don't have the time syncronization between a reference node and target node or have a time offset among reference nodes, the positioning error will increase due to the ranging error. The conventional positioning algorithm does not have a accurate device's position because ranging error is added the calc dation of the position. In this paper, we propose a hybrid method of ToA and TDoA ll increase due. We use MHP pulse that has orthogonal pulse instead of the existing pulse to transmit and receive pulses between a target node and reference nodes. We can estimate the target node's position by ToA and TDoA estimation to transmit and receive MHP pulses only once. When the proposed Hybrid method iteratively calculate the distance, we can select the ranging technique to have more accurate position. The simulation results confirm the enhancement of the Hybrid method.
Keywords
Hybrid method; UWB(UltraWide Band); MHP pulse; Ranging; ToA; TDoA;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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