Joint Time Synchronization and Localization of an Unknown Node in Wireless Sensor Networks
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571 citations
Cites background from "Joint Time Synchronization and Loca..."
...Based on this observation, the joint synchronization and localization under line-of-sight transmission has been recently studied in [49], and it is found that the two problems are coupled and it is beneficial to jointly solve the two problems in the same time....
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References
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"Joint Time Synchronization and Loca..." refers background or methods in this paper
...During the round exchange, a message is sent from Node at time and is received by at time ....
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...In order to avoid the computationally expensive numerical search, in the second part, we propose a low-complexity two-stage LS estimator....
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...…lemma, the CRLB for is given by (60) From the above expression, we can see that, the first term in (60) is the CRLB for when the anchor timings and positions are accurate, and the second term represents the increase in CRLB of when there are uncertainties in the anchor timings and locations....
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...With and the joint PDF in (11), the CRLB can be derived as [22] (53) where , and the second equality above is obtained after taking the expectation....
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"Joint Time Synchronization and Loca..." refers methods in this paper
...When the LS-I algorithm is applied to the case with anchor uncertainties, the solution is given by (52) and the covariance matrix of the estimation of is given by (65) The variances of , are given by the first two diagonal elements of ....
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2,537 citations