Paper Info
Title
A Pseudorange Measurement Scheme Based on Snapshot for Base Station Positioning Receivers.
Abstract
Digital multimedia broadcasting signal is promised to be a wireless positioning signal. This paper mainly studies a multimedia broadcasting technology, named China mobile multimedia broadcasting (CMMB), in the context of positioning. Theoretical and practical analysis on the CMMB signal suggests that the existing CMMB signal does not have the meter positioning capability. So, the CMMB system has been modified to achieve meter positioning capability by multiplexing the CMMB signal and pseudo codes in the same frequency band. The time difference of arrival (TDOA) estimation method is used in base station positioning receivers. Due to the influence of a complex fading channel and the limited bandwidth of receivers, the regular tracking method based on pseudo code ranging is difficult to provide continuous and accurate TDOA estimations. A pseudorange measurement scheme based on snapshot is proposed to solve the problem. This algorithm extracts the TDOA estimation from the stored signal fragments, and utilizes the Taylor expansion of the autocorrelation function to improve the TDOA estimation accuracy. Monte Carlo simulations and real data tests show that the proposed algorithm can significantly reduce the TDOA estimation error for base station positioning receivers, and then the modified CMMB system achieves meter positioning accuracy.
Year
DOI
Venue
2017
10.3390/s17122783
SENSORS
Keywords
Field
DocType
CMMB,pseudo code,TDOA,Taylor expansion
Base station,Pseudorange,Fading,Electronic engineering,Bandwidth (signal processing),Ranging,Multilateration,Engineering,Multiplexing,Digital multimedia broadcasting
Journal
Volume
Issue
ISSN
17
12.0
1424-8220
Citations 
PageRank 
References 
0
0.34
8
Authors
4
Name
Order
Citations
PageRank
Jun Mo131.43
Zhongliang Deng2217.47
Buyun Jia331.76
Xinmei Bian431.43