Results 171 to 180 of about 12,351 (211)

TDOA Localization Scheme with NLOS Mitigation

2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall), 2020
It is important to deploy the capability to locate a User Equipment (UE) using the Time-Difference-of-Arrival (TDOA) measurements. One of the sources of error is the presence of Non-Line-of-Sight (NLOS) errors in the localization problem, which leads to severe degradation in the localization performance using conventional localization algorithms such ...
Wuyang Jiang, Baogang Ding
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NLOS Mitigation Method for TDOA Measurement

2010 Sixth International Conference on Intelligent Information Hiding and Multimedia Signal Processing, 2010
In this paper, a non-line-of-sight (NLOS) error mitigation on time-difference-of-arrival (TDOA) measurements from pilot signals of a wireless communication network is proposed to solve the positioning and tracking issue involved in the environments where some base stations have NLOS errors.
Hao Jiang, Jie Xu, Zhen Li
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Influence of Correction for Atmospheric Refraction in passive TDOA location on system TDOA error

2019 International Conference on Control, Automation and Information Sciences (ICCAIS), 2019
When radar measures the aerial target, the influence of atmospheric refraction will lead to its measurement error. First, based on the principle of correction for atmospheric refraction on single station system, an algorithm correction for atmospheric refraction of passive TDOA location system is described.
Liu Chang-jiang, Wang Chao-feng, LE Dan
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Unsynchronized ultrasound system for TDOA localization

2014 International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2014
Indoor localization based on time difference of arrival (TDOA) has been recently a promising field of study. We consider the previously unsolved problem of locating a moving target receiver by using unsynchronized stationary beacons without requirement of manual calibration. Thus, the received signals and their time of arrival (TOA) have to be assigned
Alexander Ens, Leonhard M. Reindl, Joan Bordoy, Johannes Wendeberg, Christian Schindelhauer   +4 more
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TDOA-Based Acoustic Direction Finding

2018
This chapter focuses on estimating the azimuth and elevation angles of a sound emitter based on time-difference-of-arrival (TDOA) measurements using an array of acoustic sensors. The TDOA-based direction-finding problem is appropriate because in a range of scenarios the source only emits a transient signal and TDOA measurements provide a simple method ...
Xunxue Cui, Kegen Yu, Songsheng Lu
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Multipath detection in TDOA localization scenarios

2012 Workshop on Sensor Data Fusion: Trends, Solutions, Applications (SDF), 2012
In this paper, we investigate the detection of multi-path signal propagation in a Time Difference of Arrival (TDOA) localization scenario. Usually, TDOA measurements are obtained by determining the absolute maximum of the cross correlation function of signals recorded at different sensor nodes in a sensor network.
Christian Steffes, Sven Rau
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Clock Offsets in TDOA Localization

2006
Time based TDOA localization systems require time or clock synch-ronization between receivers such as cellular base stations, satellites, and sensor nodes. Imperfection of time synchronization causes degradation in positioning accuracy. However if we know about its characteristics and how to estimate the clock offsets, the localization system can be ...
Seong, N.-S., Park, S.-O. Park, SeongOok
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VLC-TDOA Using Sinusoidal Pilot Signal

2013 International Conference on IT Convergence and Security (ICITCS), 2013
In this paper, we propose an indoor visible light positioning system which is based on time difference of arrival (TDOA). Compared to current TDOA which uses square wave for pilot signal, our system uses sinusoidal wave for pilot signal. Our proposed system is simulated in the room measuring 5×5×3m3.
Youngsuk Kim, Yoan Shin, Myungsik Yoo
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Cooperative TDOA estimation with trigger relay

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, 2011
In this paper, we investigate the relaying issue of Zero-Padding (ZP) Orthogonal Frequency Division Multiplexing (OFDM) technique to estimate Time Difference of Arrival (TDOA) for locationing applications. In order to benefit from the easy processing of Amplify-and-Forward (AF) relay as well as the noise and interference cancellation of Decode-and ...
H. Lu, P. Martinez, H. Nikookar
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Distributed Tdoa-Based Indoor Source Localisation

2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2018
Indoor localisation is an important research topic with several possible applications. For example, knowing a user's location can be used as navigation aid in hospitals and malls, or for better targeted marketing. In this paper we consider the case where the environment of interest is equipped with several receivers (with known location) from which ...
Wangyang Yu, Nikolay D. Gaubitch, Richard Heusdens   +2 more
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