Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated Noises
This paper addresses the problem of estimation fusion in a distributed wireless sensor network (WSN) under the following conditions: (i) sensor noises are contaminated by outliers or gross errors; (ii) process noise and sensor noises are correlated; (iii) cross-correlation among local estimates is u...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-04-01
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| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1155/2014/393802 |
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| _version_ | 1832547928851349504 |
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| author | Yan Zhou Dongli Wang Tingrui Pei Shujuan Tian |
| author_facet | Yan Zhou Dongli Wang Tingrui Pei Shujuan Tian |
| author_sort | Yan Zhou |
| collection | DOAJ |
| description | This paper addresses the problem of estimation fusion in a distributed wireless sensor network (WSN) under the following conditions: (i) sensor noises are contaminated by outliers or gross errors; (ii) process noise and sensor noises are correlated; (iii) cross-correlation among local estimates is unknown. First, to attack the correlation and outliers, a correlated robust Kalman filtering (coR 2 KF) scheme with weighted matrices on innovation sequences is introduced as local estimator. It is shown that the proposed coR 2 KF takes both conventional Kalman filter and robust Kalman filter as a special case. Then, a novel version of our internal ellipsoid approximation fusion (IEAF) is used in the fusion center to handle the unknown cross-correlation of local estimates. The explicit solution to both fusion estimate and corresponding covariance is given. Finally, to demonstrate robustness of the proposed coR 2 KF and the effectiveness of IEAF strategy, a simulation example of tracking a target moving on noisy circular trajectories is included. |
| format | Article |
| id | doaj-art-874e55ebd1bb45199a5f8f0673b10e83 |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2014-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-874e55ebd1bb45199a5f8f0673b10e832025-02-03T06:42:58ZengWileyInternational Journal of Distributed Sensor Networks1550-14772014-04-011010.1155/2014/393802393802Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated NoisesYan Zhou0Dongli Wang1Tingrui Pei2Shujuan Tian3 Key Laboratory of Intelligent Computing & Information Processing of MOE, Xiangtan University, Xiangtan 411105, China College of Information Engineering, Xiangtan University, Xiangtan 411105, China College of Information Engineering, Xiangtan University, Xiangtan 411105, China College of Information Engineering, Xiangtan University, Xiangtan 411105, ChinaThis paper addresses the problem of estimation fusion in a distributed wireless sensor network (WSN) under the following conditions: (i) sensor noises are contaminated by outliers or gross errors; (ii) process noise and sensor noises are correlated; (iii) cross-correlation among local estimates is unknown. First, to attack the correlation and outliers, a correlated robust Kalman filtering (coR 2 KF) scheme with weighted matrices on innovation sequences is introduced as local estimator. It is shown that the proposed coR 2 KF takes both conventional Kalman filter and robust Kalman filter as a special case. Then, a novel version of our internal ellipsoid approximation fusion (IEAF) is used in the fusion center to handle the unknown cross-correlation of local estimates. The explicit solution to both fusion estimate and corresponding covariance is given. Finally, to demonstrate robustness of the proposed coR 2 KF and the effectiveness of IEAF strategy, a simulation example of tracking a target moving on noisy circular trajectories is included.https://doi.org/10.1155/2014/393802 |
| spellingShingle | Yan Zhou Dongli Wang Tingrui Pei Shujuan Tian Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated Noises International Journal of Distributed Sensor Networks |
| title | Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated Noises |
| title_full | Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated Noises |
| title_fullStr | Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated Noises |
| title_full_unstemmed | Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated Noises |
| title_short | Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated Noises |
| title_sort | robust estimation fusion in wireless senor networks with outliers and correlated noises |
| url | https://doi.org/10.1155/2014/393802 |
| work_keys_str_mv | AT yanzhou robustestimationfusioninwirelesssenornetworkswithoutliersandcorrelatednoises AT dongliwang robustestimationfusioninwirelesssenornetworkswithoutliersandcorrelatednoises AT tingruipei robustestimationfusioninwirelesssenornetworkswithoutliersandcorrelatednoises AT shujuantian robustestimationfusioninwirelesssenornetworkswithoutliersandcorrelatednoises |