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This paper is related to the comparison between a 3D UTD (Uniform Theory of Diffraction) propagation model and NFC (Near Field Chamber) measurements, in a context of an antenna disturbed by a dielectric circular cylinder, referring to a “Scattering” case [1], i.e. a Transmitter and a Receiver “off” the cylinder. After the determination of the UTD model validity domain in terms of frequency and “antenna-cylinder”...
This paper investigates the impact of realistic antennas on joint anchor-less localization and indoor characterization based on Impulse Radio (IR) Ultra Wideband (UWB) communications. In this frame, the Maximum Averaged Likelihood (MAL) algorithm and its extended version are considered, both relying on a tree approach consisting in two stages. The first part of the process, which is common to both...
This paper presents an algorithm that enables anchor-less localization for pairs of static Impulse Radio - Ultra Wide Band (IR-UWB) devices in a room. The estimation progresses through a tree, as the most significant received paths are successively considered. Unlikely path parameters estimates are progressively rejected, relying on cross-correlation (i.e. with respect to predicted waveforms), as...
This paper describes different measurements schemes for UWB antenna characterization in frequency domain as well as in time domain. The antenna measurements are well known in frequency domain, but the UWB technology introduces new requirements, especially in the time domain and then different measurement methods are necessaries. The time domain characteristics could be obtained through direct method...
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