An Analysis of High Precision Detection Technique for Wireless Positioning System

2013 ◽  
Vol 380-384 ◽  
pp. 3878-3881 ◽  
Author(s):  
Yan Nan Xiao ◽  
Zhong Liang Deng ◽  
Xiao Fei Sun ◽  
Xiao Guang Wang
Keyword(s):  
High Precision ◽  
Mobile Station ◽  
User Interaction ◽  
Frequency Hopping ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
Positioning System ◽  
Estimation Errors ◽  
Wireless Positioning ◽  
Station Location

In order to solve the issue of high precision detection for mobile phone, an effective approach for triggering the GSM signal is proposed to make the phone transmit the frequency hopping signal which can be established without user interaction. An algorithm of time delay estimation for frequency hopping is proposed and verified by the simulation. The results show that bandwidth signal of frequency hopping can be used which leads to the estimation errors range of approximately [-4.3m, +4.3 and the multipath resolution is improved as well. The technique is therefore ideally suited for high precision of mobile station location.

Study on the Location Method Based on Seismic Wave Detection

2012 ◽  
Vol 229-231 ◽  
pp. 2038-2041 ◽  
Author(s):  
Chao Xiong ◽  
Bing Wen Zhang ◽  
Li Zhang ◽  
Chun Ting Ma
Keyword(s):  
High Precision ◽  
Seismic Wave ◽  
Azimuth Angle ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
Location Method ◽  
Wave Detection ◽  
Seismic Sensors ◽  
Array Structure ◽  
Square Array

A location method based on seismic wave detection was put forward. The seismic wave was collected by high-precision seismic sensors which were set as five-element-square-array structure. The distance and azimuth angle were acquired according to the time delay estimation between each sensor. The result of experiment shows that the location method is effective and has a high precision.

scholarly journals Underwater Acoustic Time Delay Estimation Based on Envelope Differences of Correlation Functions

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1259 ◽  
Author(s):  
Guodong Li ◽  
Jinsong Wu ◽  
Taolin Tang ◽  
Zhixin Chen ◽  
Jun Chen ◽  
...  
Keyword(s):  
Time Delay ◽  
Correlation Functions ◽  
Estimation Method ◽  
Digital Signal ◽  
Low Complexity ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
Estimation Errors ◽  
Underwater Acoustic ◽  
Amplitude Fluctuations

This paper proposes underwater acoustic time delay estimation based on the envelope differences of correlation functions (EDCF), which mitigates the delay estimation errors introduced by the amplitude fluctuations of the correlation function envelopes in the traditional correlation methods (CM). The performance of the proposed delay estimation method under different time values was analyzed, and the optimal difference time values are given. To overcome the influences of digital signal sampling intervals on time delay estimation, a digital time delay estimation approach with low complexity and high accuracy is proposed. The performance of the proposed time delay estimation was analyzed in underwater multipath channels. Finally, the accuracy of the delay estimation using this proposed method was demonstrated by experiments.

Tensor-based time-delay estimation for second and third generation global positioning system

2019 ◽  
Vol 92 ◽  
pp. 1-19 ◽  
Author(s):  
Mateus da Rosa Zanatta ◽  
Fábio Lúcio Lópes de Mendonça ◽  
Felix Antreich ◽  
Daniel Valle de Lima ◽  
Ricardo Kehrle Miranda ◽  
...  
Keyword(s):  
Time Delay ◽  
Global Positioning System ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
Positioning System ◽  
Third Generation ◽  
Global Positioning

scholarly journals Research and Prospect on Key Technologies of Indoor Positioning Based on Visible Light Communication

2022 ◽  
Vol 2160 (1) ◽  
pp. 012074
Author(s):  
Yong Cao ◽  
Yifan Zheng ◽  
Xiao Wang ◽  
Yanbo Liu ◽  
Yi Liu
Keyword(s):  
Visible Light ◽  
High Precision ◽  
Electromagnetic Interference ◽  
Visible Light Communication ◽  
Indoor Positioning ◽  
Modulation Method ◽  
Positioning System ◽  
White Led ◽  
Wireless Positioning ◽  
Modulation Methods

Abstract Indoor positioning has become a research hotspot because of its important application value in industrial production and daily life. Traditional wireless positioning technologies such as Wi Fi and Bluetooth are difficult to achieve high-precision indoor positioning due to electromagnetic interference and multipath effect. The modulated white LED can not only meet the needs of lighting, but also transmit the location information to achieve high-precision indoor positioning. This paper first introduces several modulation methods commonly used in visible light positioning system, compares the characteristics of different modulation methods, and proposes a modulation method suitable for visible light positioning; Then, two demodulation methods of the visible light positioning system are introduced and discussed; After that, several visible light location algorithms are introduced, and the performance of each algorithm is analyzed in detail; Finally, the problems in visible light positioning are discussed and prospected.

High-precision time delay estimation of narrowband radio signal by PHAT-LSTM

2021 ◽  
Author(s):  
Yao Shunyu ◽  
Qiao Meng ◽  
Congyan Chen ◽  
Irfan Tariq ◽  
Chenye Zhou ◽  
...  
Keyword(s):  
Time Delay ◽  
High Precision ◽  
Radio Signal ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
Precision Time
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