At the present time, most of existing security systems only detect and track targets in line-of-sight (LOS). However, practice, locations are often out line sight. This article focuses on non-line-of-sight (NLOS) moving target detection with low-power transmission signals by reflection. There two key problems, weak echo signal multipath effect. In terms issues, this paper constructs model NLOS ...

Low-power devices such as cell phones, and wireless routers are commonly used to control Improvised Explosive Devices (IEDs) and as the communication nodes for the sake of command and control. Quickly locating the source of these signals is ambitious, specifically in a metropolitan environment where buildings and towers may cause intervention. This presents a geolocation system that compounds t...

The performance of classic radar geometry based on the line-of-sight (LOS) signal transmitted from to target in free space is affected by multipath echoes urban areas, where non-line-of-sight (NLOS) signals reflected obstacles are received radar. Based prior information situation, this article proposes a novel two-stage localization algorithm with exploitation dense clutter environment. In offl...

Ultra-wideband (UWB) is a widely used technology in wireless indoor positioning. However, Non-line-of-sight (NLOS) and complex multipath fading introduce positioning errors to the UWB system. In order alleviate influence of non-line-of-sight fading, channel-quality-evaluation-based method proposed this paper. method, qualities channel between unknown nodes anchor are evaluated by weighted equat...

In driver assistance or self-driving systems, millimeter-wave radar is an indispensable sensing tool because of its applicability to all weather conditions non-line-of-sight (NLOS) sensing.This study focuses on a human recognition issue in the NLOS scenario by applying support vector machine (SVM)-based learning approach diffraction signal.We show that there significant difference signals betwe...

This paper investigates 3D positioning in an indoor line of sight (LOS) and nonline of sight (NLOS) combined environment. It is a known fact that time-of-arrival-(TOA-) based positioning outperforms other techniques in LOS environments; however, multipath in an indoor environment, especially NLOS multipath, significantly decreases the accuracy of TOA positioning. On the other hand, received-sig...

The wireless sensor network (WSN) has received increasing attention since it has many potential applications such as the internet of things and smart city. The localization technology is critical for the application of the WSN. The obstacles induce the larger non-line of sight (NLOS) error and it may decrease the localization accuracy. In this paper, we mainly investigate the non-line of sight ...

It is well known that non-line-of-sight (NLOS) and multipath propagation biases time of arrival (TOA) and Time Difference of Arrival (TDOA) estimates thus reducing accuracy of positioning algorithms. In order to achieve timing error reduction, a high-resolution first arriving path detector from propagation channel estimates is derived based on the minimum variance (MV) estimates and normalized ...

IEEE 802.16 standard is created to compete with cable access networks. In the beginning end users are immobile and have a line of sight with base station, now it moved to mobile non line of sight (NLOS) with the new standard IEEE 802.16e and IEEE 802.16j. The new IEEE 802.16j standard which is an amendment to IEEE 802.16e is mobile multi hop relay (MMR) specification for wireless networks. This...

In this paper, an efficient model of the channel matrix is developed for 2 × Wireless Body Area Network Multiple Input Output (WBAN-MIMO) system, based on deep learning algorithms. The composed three Moreover, predicts simultaneously H in underground mine and identifies position collected data both Line Sight (LoS) Non-Line (NLoS) scenarios. trained evaluated using magnitude phase...