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- Publisher Website: 10.1088/0957-0233/23/8/085005
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Article: Unbiasedness of simultaneous independent measurement
Title | Unbiasedness of simultaneous independent measurement |
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Authors | |
Keywords | bias drift Earths rotation velocity gyroscope simultaneous independent measurement unbiasedness |
Issue Date | 2012 |
Citation | Measurement Science and Technology, 2012, v. 23, n. 8, article no. 085005 How to Cite? |
Abstract | We manage to get the true parameter value out of biased data without any zero calibration, a result which has not been reported to our knowledge. In order to obtain the true value of a given physical quantity out of biased noises, a general model and an algorithm based on simultaneous independent measurements are demonstrated. A decision function is constructed using variable measuring vectors. A nonlinear estimator is provided using linear combinations of differential statistics of initial observations. Repeated gyroscope experiments targeting the Earth's local rotation velocity are implemented to validate the algorithm and the estimator. Experimental results show that the true rotation velocity is obtained even if initial observations are either positively or negatively biased. Therefore, it is possible to get the true value of a physical quantity using simultaneous multi-dimensional measurements, no matter whether systematic biases exist or not. This reveals a phenomenon that physical observations, even though obscured by time-varying biases and noises, have an intrinsic true-value feature which has not been made use of in current theories and applications. © 2012 IOP Publishing Ltd. |
Persistent Identifier | http://hdl.handle.net/10722/317006 |
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.523 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Yang, Yi | - |
dc.contributor.author | Wang, Zinan | - |
dc.contributor.author | Li, Zhengbin | - |
dc.date.accessioned | 2022-09-19T06:18:35Z | - |
dc.date.available | 2022-09-19T06:18:35Z | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Measurement Science and Technology, 2012, v. 23, n. 8, article no. 085005 | - |
dc.identifier.issn | 0957-0233 | - |
dc.identifier.uri | http://hdl.handle.net/10722/317006 | - |
dc.description.abstract | We manage to get the true parameter value out of biased data without any zero calibration, a result which has not been reported to our knowledge. In order to obtain the true value of a given physical quantity out of biased noises, a general model and an algorithm based on simultaneous independent measurements are demonstrated. A decision function is constructed using variable measuring vectors. A nonlinear estimator is provided using linear combinations of differential statistics of initial observations. Repeated gyroscope experiments targeting the Earth's local rotation velocity are implemented to validate the algorithm and the estimator. Experimental results show that the true rotation velocity is obtained even if initial observations are either positively or negatively biased. Therefore, it is possible to get the true value of a physical quantity using simultaneous multi-dimensional measurements, no matter whether systematic biases exist or not. This reveals a phenomenon that physical observations, even though obscured by time-varying biases and noises, have an intrinsic true-value feature which has not been made use of in current theories and applications. © 2012 IOP Publishing Ltd. | - |
dc.language | eng | - |
dc.relation.ispartof | Measurement Science and Technology | - |
dc.subject | bias drift | - |
dc.subject | Earths rotation velocity | - |
dc.subject | gyroscope | - |
dc.subject | simultaneous independent measurement | - |
dc.subject | unbiasedness | - |
dc.title | Unbiasedness of simultaneous independent measurement | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1088/0957-0233/23/8/085005 | - |
dc.identifier.scopus | eid_2-s2.0-84863837850 | - |
dc.identifier.volume | 23 | - |
dc.identifier.issue | 8 | - |
dc.identifier.spage | article no. 085005 | - |
dc.identifier.epage | article no. 085005 | - |
dc.identifier.eissn | 1361-6501 | - |
dc.identifier.isi | WOS:000306366600013 | - |