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As one possible continuation of development of Masat-1, the first Hungarian satellite, in 2015, a group of student, from Faculty of Electrical Engineering and Informatics and Mechanical Engineering, decided to realize a PocketQube-class satellite, called Smog-1. Smog-1 is a 5 cm cubesat as PocketQube with less than 180 g mass. The aim of Smog-1 is to measure the radio frequency (RF) smog caused by...
This study compares and analyzes phase scintillation σφ during periods of low and high solar activity. This study focused on the low solar activity from July 2007 to June 2008 (sunspot number (SSN) ranging from 0 to 10) and the high solar activity from July 2013 to June 2014 (SSN 37-103). The data were obtained from a GISTM receiver at the Wireless and Radio Science Centre, Universiti Tun Hussein...
For economical, technological and social development of any country needs enhanced health care system. Development of health care system necessitates large no of manpower, especially when a patients needs continuous monitoring. Power of information and communication technology provided efficient and effective solution to health care system. Using Internet of Things (IoT) condition of a patient can...
In recent years GNSS has become the recognised core element for the provision of accurate and reliable positioning, velocity and timing (PVT) data for multiple navigational applications. However, since the occurrence of strong ionospheric disturbances impacts the accuracy of GNSS measurements leading consequently to unreliable PVT solutions, not only precision and accuracy but also high-level reliability...
Wireless network security requirements are becoming more important and critical. The modern network security architectures require more attention to provide security in each network layer. This will require understanding of protocol vulnerabilities in existing protocol architectures. However, providing security requirements are not just limited to confidentiality and integrity, also availability and...
The development of new GNSS constellations, and the modernization of existing ones, has increased the availability and the number of satellites-in-view, paving the way for new navigation algorithms and techniques. These offer the opportunity to improve the navigation performance while at the same time potentially reducing the support which has to be provided by Ground and Satellite Based Augmented...
Many GNSS (Global Navigation Satellites System) applications need high integrity performances. Receiver Autonomous Integrity Monitoring (RAIM), or similar method, is commonly used. Initially developed for aeronautics, RAIM techniques may not be fully adapted for terrestrial navigation, especially in urban environments. Those techniques use basically the pseudoranges to derive an integrity criterion...
Scouring is the major component of levee failures causing floods thus make the scour monitoring very important. There exist some on field mechanisms to monitor the health of the levees but there is still need for a remote, low cost and real time monitoring system. This paper proposes a real time structural monitoring system by presenting a sensor node with embedded electronics which can be deployed...
The popularity of wearables continues to rise. However, their functionalities and applications are constrained by the types of sensors that are currently available. Accelerometers and gyroscopes struggle to capture complex user activities. Microphones and image sensors are more powerful but capture privacy sensitive information. Physiological sensors are obtrusive to users since they often require...
Recently, as elderly people population grows, the burden on caretakers are getting larger. In day care center, caretakers are taking care records aiming to improve care receiver's Quality of Life. However, in the present situation, it's difficult for caretakers to record care receiver's activity in detail because each care worker needs to take care of several care receivers at the same time and it...
Recently, as elderly people population grows, the burden on caretakers are getting larger. In day care center, caretakers are taking care records aiming to improve care receiver's Quality of Life (QoL). However, in the present situation, it is difficult for caretakers to record care receiver's activity in detail because each care worker needs to take care of several care receivers at the same time...
Achieving energy-efficiency is a challenging task in human activity monitoring. The continuous activity sensing using accelerometer and the burdensome on-node classification rapidly deplete the limited battery resource of the wearable nodes. To reduce the energy overhead and achieve the system energy-neutrality, we present a novel Bayesian framework for human activity monitoring using the energy-harvesting...
This paper proposes a method for monitoring the difference in the ionosphere between a GBAS ground station and an airborne user from single frequency L1/E1 corrections and single frequency L5/E5a corrections. The absolute ionospheric delay at the ground station cannot be estimated from the corrections only. Therefore, the monitored test statistic is the difference of an ionospheric delay estimate...
Diabetes is a chronic disease that causes critical health problems, and eventually leads to damage major organs. The number of people with diabetes keeps increasing over the next decade. Diabetes requires lifetime treatment in patients' daily life. Although many patients already know that tight glucose control is a critical factor of success for the quality of life, they still fail to monitor their...
We provide a discussion of the Controller Area Network (CAN) networking protocol as used in space applications and then report the results of destructive and nondestructive single-event effects (SEE) testing of the Intersil ISL72027SEH CAN bus transceiver. We conclude with a brief discussion of 60Co total ionizing dose (TID) testing results.
A 9Gb/s/pin 8Gb GDDR5 DRAM is implemented using a 20nm CMOS process. To cover operation up to 9Gb/s, which is the highest data-rate among implemented GDDR5 DRAMs [1], this work includes an NBTI monitor, a WCK clock receiver with equalizing and duty-cycle correction modes, CML-to-CMOS converters with wide range operation, active resonant loads at the end of WCK lane, and an on-chip de-emphasis circuit...
In undersea environment, development of low-cost communication module is highly important for dissemination of undersea wireless sensor networks. Some undersea wireless sensor network applications do not require high performance communication capability such as transmission distance. If the terrestrial low-cost communication module can be used in the undersea environment, it is possible to use the...
This research develops a honeybee behavior monitoring system. The proposed system monitors honeybees' daily activities of getting in and coming out their beehive. It provides a new way to observe honeybee behavior and replace the methods of human observation. Specifically, it automatically records environmental parameters near and in the beehive. The information collected by the system is used for...
Recently, more minors are using online communication services due to the popularity of mobile devices and smartphones. Even though minors can deepen their relationships by such communication, online communication sites introduce risks including cyber-bullying or the luring of sexual predators. Such communication risks involving minors are social matters that must be detected automatically and prohibited...
The development of the new technologies in the area of electronics has brought tremendous changes in the day to day life of human being. With advancement of technology, automated systems are being preferred over manual system. PC based control systems are highly reliable, user friendly and accurate systems. A microcontroller based controllers are being designed to control a number of equipment and...
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