399 research outputs found
Accurate Estimation of a Coil Magnetic Dipole Moment
In this paper, a technique for accurate estimation of the moment of magnetic
dipole is proposed. The achievable accuracy is investigated, as a function of
measurement noise affecting estimation of magnetic field cartesian components.
The proposed technique is validated both via simulations and experimentally.Comment: Preprin
The Rules of Competition Within the European Common Market
Ultra wideband (UWB) radio for communication has several challenges. From the physical layer perspective, asignaling technique should be optimally designed to work in synergy with the underneath hardware to achievemaximum performance. In this paper, we propose a variant of pulse position modulation (PPM) for physical layersignaling, which can achieve raw bitrate in excess of 150 Mbps on a low complexity in-house developed impulseradio UWB platform. The signaling system is optimized to maximize bitrate under practical constraints of lowcomplexity hardware and regulatory bodies. We propose a detector and derive its theoretical performance boundsand compare the performance in simulation in terms of symbol error rates (SER). Modifications to the signaling, whichcan increase the range by 4 times with a slight increase in hardware complexity, is proposed. Detectors for thismodification and a comparative study of the performance of the proposed UWB physical layer signaling schemes interms of symbol error rates are discussed.QC 20141023</p
Development of a Cooperative Localization System using a UWB Network and BLE Technology
This paper presents the development of a system able to estimate the 2D
relative position of nodes in a wireless network, based on distance
measurements between the nodes. The system uses ultra wide band ranging
technology and the Bluetooth Low Energy protocol to acquire data. Furthermore,
a nonlinear least squares problem is formulated and solved numerically for
estimating the relative positions of the nodes. The localization performance of
the system is validated by experimental tests, demonstrating the capability of
measuring the relative position of a network comprised of 4 nodes with an
accuracy of the order of 3 cm and an update rate of 10 Hz. This shows the
feasibility of applying the proposed system for multi-robot cooperative
localization and formation control scenarios.Comment: 6 pages, 12 figures, 2022 IEEE International Symposium on
Measurements & Networking (M&N
TDoA Based Positioning using Ultrasound Signals and Wireless Nodes
In this paper, a positioning technique based on Time Difference of Arrival
(TDoA) measurements is analyzed. The proposed approach is designed to consent
range and position estimation, using ultrasound transmissions of a stream of
chirp pulses, received by a set of wireless nodes. A potential source of
inaccuracy introduced by lack of synchronization between transmitting node and
receiving nodes is identified and characterized. An algorithm to identify and
correct such inaccuracies is presented.Comment: Preprin
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