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Wireless Location Technology Research Based on TDOA and TOA

Author: HuangYaPing
Tutor: ZhangLingHua
School: Nanjing University of Posts and Telecommunications
Course: Signal and Information Processing
Keywords: Wireless Location Arrival time difference Arrival time Non - line-of-sight propagation Residuals
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 102
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Abstract


Domestic 3G technology is market-oriented , and it offers more fun , entertainment , business one location-based services for the majority of consumers . In the same time , the vigorous development of the Internet of Things broader application for location-based services , wireless location technology has important theoretical significance and application value . This paper studies based on the time difference of arrival (TDOA) and arrival time (TOA) wireless location technology , the main work includes : ( 1) Research on the domestic and international positioning technology , wireless location principle and common positioning of several methods the study , focusing on the cellular network positioning technology Fang algorithm , Chan algorithm , and Taylor series expansion algorithm , experiments compared the advantages and disadvantages of several algorithms , and performance analysis . (2 ) positioning algorithm based on Kalman filtering improved the algorithm to predict the residual information to adjust the gain of the Kalman filter coefficients, while taking advantage of the the NLOS average error reconstruction of the Kalman filter observations Finally Chan algorithm out to be the positioning position of the object , and a positioning error is reduced . (3 ) RSA (Range-Scaling Algorithm) positioning algorithm , an improved algorithm . After pretreatment measurement data , the algorithm using the RSA algorithm and extreme value method calculated the estimated position of the object the weighted two positioning the final position of the object . The simulation results show that the algorithm improved positioning accuracy to a certain extent .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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