Results 171 to 180 of about 12,179 (194)
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Anchor-free TDOA self-localization
2011 International Conference on Indoor Positioning and Indoor Navigation, 2011We present an approach for the localization of passive receiver nodes in a communication network. In our settings the positions of the nodes are unknown. The only source of information is the time when environmental sound or ultrasound signals are received. The discrete signals occur at unknown positions and times, but they can be distinguished.
Johannes Wendeberg +3 more
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Estimation of User Location in 4G Wireless Networks Using Cooperative TDoA/RSS/TDoA Method
2014 Fourth International Conference on Communication Systems and Network Technologies, 2014The 4G wireless network is proposed to integrate various radio access technologies into a common network known as open wireless architecture (OWA), this has led to the idea of cooperative user location estimation, in this paper we have proposed a cooperative TDoA/RSS/TDoA user location estimation method which uses information from two different Radio ...
Reza Ashrafi Amineh +1 more
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TDOA Localization Scheme with NLOS Mitigation
2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall), 2020It 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, 2010In 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), 2019When 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), 2014Indoor 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 +4 more
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TDOA-Based Acoustic Direction Finding
2018This 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), 2012In 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
2006Time 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), 2013In 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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