Adaptive multipath mitigation in urban GNSS positioning

I. Wen Chu, Jyh Ching Juang

研究成果: Conference contribution

3 引文 斯高帕斯(Scopus)

摘要

The paper investigates the use of dual-polarization antenna for the mitigation of multipath effect in urban environment. The goal is to not only distinguish and exclude multipath components but also exploit the potential benefit in fusing direct LOS and multipath components for the determination of enhanced PVT solution. More precisely, a two-channel model is developed to characterize the received signals at RHCP- sensitive and LHCP-sensitive outputs from direct LOS and multipath inputs. A system identification approach is employed to determine the coefficients associated with the model. An adaptive filter is then used to account for the multipath components. Consequently, the contribution of the multipath component can be accounted and indeed effectively used in the position/time determination stage. To demonstrate the feasibility and effectiveness of the proposed approach, results from two experiments are presented. Open-sky experiment is first performed to analyze the antenna property and characteristics of the two distinct polarization outputs. The proposed method is then implemented in a software receiver and tested in an urban environment with strong probability of multipath interference. In the test, an unmodified receiver is subject to multipath induced positioning errors. In contrast, through the use of the proposed approach, the positioning results are significantly improved as the multipath components are accommodated. The feasibility and effectiveness of the proposed method in mitigating the multipath effect in urban environment is thus demonstrated.

原文English
主出版物標題27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014
發行者Institute of Navigation
頁面2713-2719
頁數7
ISBN(電子)9781634399913
出版狀態Published - 2014 一月 1
事件27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014 - Tampa, United States
持續時間: 2014 九月 82014 九月 12

出版系列

名字27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014
3

Other

Other27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014
國家United States
城市Tampa
期間14-09-0814-09-12

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Software
  • Aerospace Engineering
  • Electrical and Electronic Engineering

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