Time-of-arrival source localization based on weighted least squares estimator in line-of-sight/non-line-of-sight mixture environments
In this article, we propose a line-of-sight/non-line-of-sight time-of-arrival source localization algorithm that utilizes the weighted least squares. The proposed estimator combines multiple sorted measurements using the spatial sign concept, Mahalanobis distance, and Stahel–Donoho estimator, that i...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-12-01
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| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1177/1550147716683827 |
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| _version_ | 1832556737005092864 |
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| author | Chee-Hyun Park Joon-Hyuk Chang |
| author_facet | Chee-Hyun Park Joon-Hyuk Chang |
| author_sort | Chee-Hyun Park |
| collection | DOAJ |
| description | In this article, we propose a line-of-sight/non-line-of-sight time-of-arrival source localization algorithm that utilizes the weighted least squares. The proposed estimator combines multiple sorted measurements using the spatial sign concept, Mahalanobis distance, and Stahel–Donoho estimator, that is, assigning less weight to the samples as they are far from the center of inlier distribution. Also, the eigendecomposition Kendall’s τ covariance matrix is utilized as the scatter measure instead of the conventional median absolute deviation. Thus, the adverse effects by outliers can be attenuated effectively. To validate the superiority of the proposed methods, the root mean square error performances are compared with that of the existing algorithms via extensive simulation. |
| format | Article |
| id | doaj-art-40ad81e010374f69a1618f5b7963b620 |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2016-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-40ad81e010374f69a1618f5b7963b6202025-02-03T05:44:33ZengWileyInternational Journal of Distributed Sensor Networks1550-14772016-12-011210.1177/1550147716683827Time-of-arrival source localization based on weighted least squares estimator in line-of-sight/non-line-of-sight mixture environmentsChee-Hyun ParkJoon-Hyuk ChangIn this article, we propose a line-of-sight/non-line-of-sight time-of-arrival source localization algorithm that utilizes the weighted least squares. The proposed estimator combines multiple sorted measurements using the spatial sign concept, Mahalanobis distance, and Stahel–Donoho estimator, that is, assigning less weight to the samples as they are far from the center of inlier distribution. Also, the eigendecomposition Kendall’s τ covariance matrix is utilized as the scatter measure instead of the conventional median absolute deviation. Thus, the adverse effects by outliers can be attenuated effectively. To validate the superiority of the proposed methods, the root mean square error performances are compared with that of the existing algorithms via extensive simulation.https://doi.org/10.1177/1550147716683827 |
| spellingShingle | Chee-Hyun Park Joon-Hyuk Chang Time-of-arrival source localization based on weighted least squares estimator in line-of-sight/non-line-of-sight mixture environments International Journal of Distributed Sensor Networks |
| title | Time-of-arrival source localization based on weighted least squares estimator in line-of-sight/non-line-of-sight mixture environments |
| title_full | Time-of-arrival source localization based on weighted least squares estimator in line-of-sight/non-line-of-sight mixture environments |
| title_fullStr | Time-of-arrival source localization based on weighted least squares estimator in line-of-sight/non-line-of-sight mixture environments |
| title_full_unstemmed | Time-of-arrival source localization based on weighted least squares estimator in line-of-sight/non-line-of-sight mixture environments |
| title_short | Time-of-arrival source localization based on weighted least squares estimator in line-of-sight/non-line-of-sight mixture environments |
| title_sort | time of arrival source localization based on weighted least squares estimator in line of sight non line of sight mixture environments |
| url | https://doi.org/10.1177/1550147716683827 |
| work_keys_str_mv | AT cheehyunpark timeofarrivalsourcelocalizationbasedonweightedleastsquaresestimatorinlineofsightnonlineofsightmixtureenvironments AT joonhyukchang timeofarrivalsourcelocalizationbasedonweightedleastsquaresestimatorinlineofsightnonlineofsightmixtureenvironments |