Ali J. Abboud, Ali Albu-Rghaif, Abbood Kirebut Jassim,
With the rapid developments in the remote sensing technologies and services, there is a necessity for combined compression and encryption of satellite imagery. The onboard satellite compression is used to minimize storage and communication bandwidth requirements of high data rate satellite applications. While encryption is employed to secure these resources and prevent illegal use of image sensitive information. In this paper, we propose an approach to address these challenges which raised in the ...
Tópico(s): Advanced Data Compression Techniques
2018 - Institute of Advanced Engineering and Science (IAES) | International Journal of Electrical and Computer Engineering (IJECE)
Ali Albu-Rghaif, Saad A. Salman, Haider Ali Jasim Alshamary,
Multipath signals problem is still the main challenge for the global positioning system (GPS) receiver to obtain an accurate localization measurement. However, many techniques have been developed to mitigate the impact of these undesired signals at the expense of adding a burden to the GPS receiver design. Even though, none of the techniques in the works of literature was able to solve the loose signal lock issue efficiently. In this piece of work, we used a new approach to maintain the tracking ...
Tópico(s): GNSS positioning and interference
2019 - | Periodica Polytechnica Electrical Engineering and Computer Science
Ali Albu-Rghaif, Ihsan Alshahib Lami,
The GPS L1C signal is designed to improve on the localization accuracy achieved by the existing GPS L1CA and Galileo E1OS signals. All these three signals are interoperable with each other and we believe that designing an integrated solution to acquire these three signals in a single processing chain will save much valuable processing time and energy, especially when this solution is deployed in a mobile or a battery-less device. Our novel solution “CACOS” proposed here uses the Compressive Sensing ...
Tópico(s): Radio Astronomy Observations and Technology
2018 - | Proceedings of the Institute of Navigation ... International Technical Meeting/Proceedings of the ... International Technical Meeting of The Institute of Navigation
Ali Albu-Rghaif, Hussein Y. Radhi, Roiydah G. Dawood,
The increasing demand for accurate and efficient Global Navigation Satellite System (GNSS) receivers, especially in smartphones, has driven the need to combine multi-GNSS signals. Current receivers, based on Global Positioning System (GPS) and Global Navigation Satellite System (GLONASS) signals, often process these signals side-by-side, increasing complexity, size, and power consumption. Meanwhile, the next generation of smartphones and navigation applications will involve Galileo receivers to improve ...
Tópico(s): Inertial Sensor and Navigation
2024 - | Diyala Journal of Engineering Sciences
Ali Albu-Rghaif, Hussein A. Abdulkadhim,
Abstract Tracking the global positioning system (GPS) signals is a more important process in hardware/software GPS receivers. Any error leads to either provide inaccurate location fixing/measurement or lose signal lock in the tracking process. Delay lock loop and phase lock loop are responsible for synchronising with receiving code and wiping off the carrier frequency with Doppler frequency shift receptively. Code discriminator and code loop filter are characterised the delay lock loop, which is ...
Tópico(s): Advanced Electrical Measurement Techniques
2021 - IOP Publishing | IOP Conference Series Materials Science and Engineering
Hany A. Alhasany, Mohammed AH Jabarah AL-Zobaidy, Ali A. Albu-Rghaif, Hany Akeel Al-Hussaniy,
Introduction: Family history of thyroid disease (FHTD) as risk factor for congenital hypothyroidism (CH) in patients with Down syndrome (DS) has not yet been explored.Objective: To determine whether FHTD is associated with an increased risk for CH in DS.Method: 220 newborns with DS were studied in a case-control study. Thyroid function tests were compared between 37 neonates with DS with FHTD (cases) and 183 DS newborns without FHTD (reference group). Multivariate logistic regression analysis was used ...
Tópico(s): Congenital Diaphragmatic Hernia Studies
2021 - RELX Group (Netherlands) | SSRN Electronic Journal