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發表於 2025-9-21 00:13:04 | 顯示全部樓層 |閱讀模式
Human motion within the vicinity of a wireless link causes variations within the link acquired signal energy (RSS). Device-free localization (DFL) systems, comparable to variance-primarily based radio tomographic imaging (VRTI), use these RSS variations in a static wireless network to detect, find and monitor individuals in the world of the network, even by partitions. However, intrinsic motion, resembling branches transferring in the wind and rotating or vibrating equipment, additionally causes RSS variations which degrade the performance of a DFL system. In this paper, we suggest and consider two estimators to scale back the impact of the variations caused by intrinsic motion. One estimator makes use of subspace decomposition, and the opposite estimator uses a least squares formulation. Experimental results present that each estimators cut back localization root imply squared error by about 40% in comparison with VRTI. As well as, the Kalman filter monitoring outcomes from both estimators have 97% of errors lower than 1.Three m, more than 60% improvement compared to monitoring results from VRTI. In these situations, people to be situated cannot be anticipated to participate within the localization system by carrying radio devices, thus commonplace radio localization methods should not helpful for these functions.

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