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您的检索式：作者名="Weizhou Feng"
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| 1 | HUID:DBN-Based Fingerprint Localization and Tracking System with Hybrid UWB and IMU显示文摘High-precision localization technology is attracting widespread attention in harsh indoor environments.In this paper,we present a fingerprint localization and tracking system to estimate the locations of the tag based on a deep belief network(DBN).In this system,we propose using coefficients as fingerprints to combine the ultra-wideband(UWB)and inertial measurement unit(IMU)estimation linearly,termed as a HUID system.In particular,the fingerprints are trained by a DBN and estimated by a radial basis function(RBF).However,UWB-based estimation via a trilateral method is severely affected by the non-line-of-sight(NLoS)problem,which limits the localization precision.To tackle this problem,we adopt the random forest classifier to identify line-of-sight(LoS)and NLoS conditions.Then,we adopt the random forest regressor to mitigate ranging errors based on the identification results for improving UWB localization precision.The experimental results show that the mean square error(MSE)of the localization error for the proposed HUID system reduces by 12.96%,50.16%,and 64.92%compared with that of the existing extended Kalman filter(EKF),single UWB,and single IMU estimation methods,respectively. | Junchang Sun Rongyan Gu Shiyin Li Shuai Ma Hongmei Wang Zongyan Li Weizhou Feng | 2023 | China Communications2023，20，2： | 0 |
| 2 | Optical Transitions in Cr Doped Bi_(4)Ge_(3)O_(12) Crystal显示文摘In this paper,we present the results of the optical absorption spectra of Cr doped Bi_(4)Ge_(3)O_(12) crystal at room temperature and compare them with the theoretical results of a multifold scattering(MS)-Xαcalculation which include the energy-level structures and the transition energies of Cr^(3+)and Cr^(4+)located in Ge-site in the crystal. | HUANG Yingpeng FENG Xiqi HU Guanqin YANG Baocheng LING Yuanqi PANG Weizhou ZHU Jikang | 1994 | Chinese Physics Letters1994，11，6： | 0 |
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