Accurate but fragile passive non-line-of-sight recognition

Non-Parametric Non-Line-of-Sight Identification

Recently, there has been much interest in accurate determination of mobile user locations in cellular environments. A general approach to this geolocation problem is to gather time-of-arrival measurements from a number of base stations (BSs) and to estimate user locations using the traditional least square approach. However, in non-line-of-sight (NLOS) situations, measurements are significantly...

Improved line-of-sight/non-line-of-sight classification methods for pulsed ultrawideband localisation

Classification of line-of-sight (LOS) or non-LOS (NLOS) propagation is critical for most pulsed ultrawideband localisation systems. In this letter, first, the authors propose a two-dimensional (2D) LOS/NLOS classification scheme that uses skewness of the channel impulse/pulse response, which has not been used by existing work. The log-likelihood ratio of the 2D LOS/NLOS classification is used t...

Fatigued muscles in COPD but no finishing line in sight.

Non-line-of-sight tracking of people at long range

A remote-sensing system that can determine the position of hidden objects has applications in many critical real-life scenarios, such as search and rescue missions and safe autonomous driving. Previous work has shown the ability to range and image objects hidden from the direct line of sight, employing advanced optical imaging technologies aimed at small objects at short range. In this work we ...

New Parametrizations of Non - Gaussian Line - of - sight Velocity DistributionHongSheng

A ve-parameter tting formula for the line-of-sight stellar velocity distributions of steady state systems is proposed. It can faithfully reproduce velocity distributions of theoretical models ranging from nearly Gaussian prooles to strongly skewed or mildly double-peaked prooles. In contrast to van der Marel and Franx (1993) and Kuijken and Merriield (1993), the line prooles are required to hav...