no code implementations • 23 Nov 2022 • Xinyuan An, Xiaowei Cui, Sihao Zhao, Gang Liu, Mingquan Lu
Mounting multiple tags at different positions of the AGV to collect more TOFs is a feasible solution to tackle this difficulty.
no code implementations • 22 Nov 2022 • Sihao Zhao, Xiaowei Cui, Mingquan Lu
In order to realize fast positioning during a cold or warm start in a GNSS receiver, the existing approaches require an initial estimation of position and time or require a number of computational steps to recover the full pseudorange information from fractional pseudoranges and then compute the position solution.
no code implementations • 17 Jul 2022 • Xinyuan An, Sihao Zhao, Xiaowei Cui, Gang Liu, Mingquan Lu
For radio-based time-of-arrival (TOA) positioning systems applied in harsh environments, obstacles in the surroundings and on the vehicle itself will block the signals from the anchors, reduce the number of available TOA measurements and thus degrade the localization performance.
no code implementations • 14 Feb 2022 • Sihao Zhao, Ningyan Guo, Xiao-Ping Zhang, Xiaowei Cui, Mingquan Lu
In this paper, we develop a new optimal LAS method in the TDBS, namely LAS-SDT, by taking advantage of the sequential Doppler shift and TOA measurements.
no code implementations • 13 Nov 2021 • Sihao Zhao, Ningyan Guo, Xiao-Ping Zhang, Xiaowei Cui, Mingquan Lu
Numerical results in a 3D scenario verify the theoretical analysis that the estimation accuracy of the new CFTWLAS method reaches CRLB in the presented experiments when the number of the ANs is large, the geometry is appropriate, and the noise is small.
no code implementations • 24 Sep 2021 • Qin Shi, Xiaowei Cui, Sihao Zhao, Mingquan Lu
Localizing moving targets in unknown harsh environments has always been a severe challenge.
no code implementations • 17 Mar 2021 • Sihao Zhao, Xiao-Ping Zhang, Xiaowei Cui, Mingquan Lu
In this article, we design a new time-of-arrival (TOA) system for simultaneous user device (UD) localization and synchronization with a periodic asymmetric ranging network, namely PARN.
no code implementations • 3 Mar 2021 • Sihao Zhao, Xiao-Ping Zhang, Xiaowei Cui, Mingquan Lu
In two-way time-of-arrival (TOA) systems, a user device (UD) obtains its position by round-trip communications to a number of anchor nodes (ANs) at known locations.
no code implementations • 30 Jan 2021 • Ningyan Guo, Sihao Zhao, Xiao-Ping Zhang, Zheng Yao, Xiaowei Cui, Mingquan Lu
Compared with the conventional iterative method, the proposed new CFJLAS method does not require initialization, obtains the optimal solution under the small noise condition, and has a low computational complexity.
no code implementations • 5 Jan 2021 • Sihao Zhao, Xiao-Ping Zhang, Xiaowei Cui, Mingquan Lu
We show that the LSPM-D is a special case of the LSPM-KVD when the UD is stationary with zero velocity.
no code implementations • 25 Nov 2020 • Sihao Zhao, Xiao-Ping Zhang, Xiaowei Cui, Mingquan Lu
Numerical results verify the theoretical analysis on positioning accuracy, and show that the new CDL method has superior performance over the state-of-the-art closed-form method.
no code implementations • 24 Nov 2020 • Sihao Zhao, Xiao-Ping Zhang, Xiaowei Cui, Mingquan Lu
We show that the conventional two-way TOA method is a special case of the TWLAS when the UD is stationary, and the TWLAS has high estimation accuracy than the conventional one-way TOA method.