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      Multipath Map Method for TDOA Based Indoor Reverse Positioning System with Improved Chan-Taylor Algorithm

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          Abstract

          We study wireless indoor positioning systems where multiple synchronized infrastructure devices simultaneously receive signals from an object of interest whose arrival times are measured. The positioning performance is degraded by unresolvable channel multipath and non-line-of-sight (NLOS) reflctions which cause a bias in the time difference of arrival (TDOA) measurements. In order to reduce the negative effect of multi-path, a Multi-Path Map (MPM) method based on spatial domain modeling principle in the reverse positioning framework with good robustness is proposed. Meanwhile, an improved non-linear iterative algorithm with height component constrained which reduces the complexity is introduced to calculate the coordinates so that the performance of the MPM can be verified. By using the MPM measurements as pre-calibration information to compensate the TDOA observed value, the accuracy of the cooperative location based on a UWB device is 6.45 cm, which achieves 63% improvement than that of none MPM used.

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          Most cited references20

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          A simple and efficient estimator for hyperbolic location

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            Position-Location Solutions by Taylor-Series Estimation

            WADE FOY (1976)
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              Indoor geolocation science and technology

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                Author and article information

                Journal
                Sensors (Basel)
                Sensors (Basel)
                sensors
                Sensors (Basel, Switzerland)
                MDPI
                1424-8220
                05 June 2020
                June 2020
                : 20
                : 11
                : 3223
                Affiliations
                [1 ]Engineering Center of SHMEC for Space Information and GNSS, East China Normal University, Shanghai 200241, China; 51181214031@ 123456stu.ecnu.edu.cn (C.H.); dndong@ 123456cs.ecnu.edu.cn (D.D.); zqzheng@ 123456ee.ecnu.edu.cn (Z.Z.); cyu@ 123456sist.ecnu.edu.cn (C.Y.); 51171214011@ 123456stu.ecnu.edu.cn (T.Z.)
                [2 ]Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, China
                [3 ]Shanghai Institute of Technology, Shanghai 201418, China; yuzhang@ 123456sit.edu.cn
                Author notes
                [* ]Correspondence: kzhao@ 123456ce.ecnu.edu.cn ; Tel.: +86 1590-170-4790
                Author information
                https://orcid.org/0000-0002-8381-3714
                Article
                sensors-20-03223
                10.3390/s20113223
                7313693
                32517133
                8ae865c3-7405-40eb-8294-2744ce0ba6dc
                © 2020 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 25 April 2020
                : 02 June 2020
                Categories
                Letter

                Biomedical engineering
                multipath,tdoa,reverse positioning,chan-taylor
                Biomedical engineering
                multipath, tdoa, reverse positioning, chan-taylor

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