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Advanced Receiver Autonomous Integrity Monitoring (ARAIM) is a new Aircraft Based Augmentation System (ABAS) technique, firstly presented in the two reports of the GNSS Evolutionary Architecture Study (GEAS). The ARAIM technique offers the opportunity to enable GNSS receivers to serve as a primary means of navigation, worldwide, for precision approach down to LPV-200 operation, while at the same time...
GNSS signals are vulnerable to various types of interference including jamming and spoofing attacks. Spoofing signals are designed to deceive target GNSS receivers without being detected by conventional receiver quality monitoring metrics. This paper focuses on detecting an overlapped spoofing attack where the correlation peaks of the authentic and spoofing signals interact during the attack. Several...
This paper presents the time hopping (TH) visible light communication (VLC) system for an electromagnetic wave free indoor healthcare. VLC technology has emerged as an alternative wireless communication due to various advantages such as ubiquity, low energy consumption, no radio frequency (RF) radiation, and security against undesired network access. Significant bio-medical signal including the electrocardiography...
Identification of malfunctioned PV panels in a large-scale PV plant requires panel-level health checks. A power line communication (PLC) on PV cables may be helpful for gathering health monitoring status (e.g., voltage and temperature) from each panel. However, conventional PLCs, work in parallel-connected cases, cannot be simply applied to series-connected cases, whose configurations are very common...
In this modern era, mobile phone has great impact on daily life and is used for exchange of information in the form of text, audio, email and images. Though it has many positive impacts but its negative impact in teenagers can not be neglected. These negative impact can be reduced by continuous monitoring. This paper presents a novel user defined system model to detect abnormal behavior of cell phone...
Queue management in Named Data Networks (NDN) has gained a lot of attention recently. Unlike the traditional IP architecture, the transport mechanism in NDN is intricate and comprises of in-network caching of data packets at routers. Hence, the most effective avoidance of congestion can occur at the routers itself. In this paper, we make two contributions: first, we propose a back pressure based congestion...
In this work we propose a web-based FM broadcasting monitoring system. Our system provides several tools to do the monitoring of the FM broadcasting station content remotely via web. One of them is the capability to tune the frequency to the particular station frequency and record the broadcasting content when the DJ (disk jockey) is on the air. Some recording qualities are available that allows users...
Machine-to-machine communications (M2M) provide a promising solution for accurately collecting real-time status information of primary equipment in substations. However, the system quality of service (QoS) might be severely degraded by the high-amplitude impulsive noise produced by primary equipment. In this paper, we firstly propose a multi-antenna M2M communications based architecture for substation...
This work considers methods to detect unknown signals in cognitive radio networks. These methods can be applied when taking decision about presence of a signal in the frequency channel when monitoring radio spectrum. The problem of uncertainty can appear when monitoring spectrum. A way of overcoming a priori uncertainty that arises when monitoring the radio spectrum is proposed.
Microseismic monitoring has been a key technology in the exploitation of unconventional reservoirs. Numerical simulation of various types of microseismic sources is the foundation for source location and source mechanism inversion. In this paper, equations of equivalent body forces with stress components and particle velocity components are derived, then they are included in the finite difference...
With the demand for road transport of hazmat in the past few years, accidents occur frequently during the dangerous goods transportation and road transportation safety issues become increasingly prominent. Therefore, it is urgent to make full use of technical measures of information collection and transmission to monitor the state of dangerous goods. A real-time system is put forward in this paper,...
Flyer is a means utilized popularly and effectively in recording landscape from above, collecting data of environment and weather, contributing to field works, especially conveying samples and medications from or to patients living in areas isolated by flood. It is necessary to track flyer's locations and characteristics for its activities. Visualization-based system for tracking flyer enables user...
A self-powered event-triggered wireless sensor network was developed for monitoring sabotage activities. The network has the capability of identifying suspicious activities and automatically sending out alarming signals. The sensor network consists of self-powered wireless alarming sensor nodes (SWASNs), router nodes, receiver nodes, GSM network and PC terminal. The SWASN is powered by a novel vibration-threshold...
In this research work, an electronic system is designed to monitor the physical data which helps the user in many ways. This paper presents a universal data monitoring system, based on computer using virtual instrumentation software, Keil, LabVIEW and Proteus. With the use of this application, users can measure the variations in temperature, pressure and weight. In this paper, block diagram of circuitry...
This paper investigates the potential of active ultrasound jellyfish monitoring systems to continuously detect, quantify and identify different species in turbulent underwater environments. The experimentations carried out in December 2015 at the Aquarium de Paris, France, are used to propose an unified acoustic signal processing framework for visualizing jellyfish passages.
Despite customers increasingly depend on cloud systems, that are not advertised with any information about either the design or the performance figures of the network infrastructures that support them. In this paper, we introduce CloudSurf, an open-source platform we have designed, implemented, and recently publicly released [5]. CloudSurf allows to monitor public-cloud networking infrastructures...
The periodic sensing requirements in cognitive radios cause interruptions for secondary user (SU) communication. As a result, the throughput of the secondary system during sensing can be very low. In this paper, we propose a monitoring scheme for Orthogonal Frequency Division Multiplexing (OFDM) based cognitive radio which can monitor the spectrum during ongoing communication and detect the emergence...
Networks are currently essential for computing: It is therefore essential to guarantee the quality of network links in order to ensure a proper operation of computing systems. However, a widespread deployment of network monitoring devices might not be economically feasible. In this paper, we propose the use of Programmable System-on-Chip FPGAs (PSoCs) for enabling a comprehensive testing of networks...
Forecasting and nowcasting of severe weather conditions, such as tornadoes, local heavy rainfall, thunderstorms, and hailstorms, are important subjects in meteorology. Cumulonimbi such as supercells and multicell convective storms locally cause these natural hazards in a short period of time. To mitigate their damage, technology to detect a “sign” prior to the event should be developed. One of the...
A unique wide band receiver for radio astronomy has been designed and constructed. Receivers used for radio astronomy consist of two parts, the front end cold electronics and the back end warm electronics. While the cold electronics provides for a low noise amplifier and receiver calibrations, the warm electronics provides analog signal processing that shapes and filters the signals before digitizing...
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