A Comprehensive Review on Autonomous Navigation

The field of autonomous mobile robots has undergone dramatic advancements over the past decades. Despite achieving important milestones, several challenges are yet to be addressed. Aggregating the achievements of the robotic community as survey papers is vital to keep the track of current state-of-the-art and the challenges that must be tackled in the future. This paper tries to provide a comprehensive review of autonomous mobile robots covering topics such as sensor types, mobile robot platforms, simulation tools, path planning and following, sensor fusion methods, obstacle avoidance, and SLAM. The urge to present a survey paper is twofold. First, autonomous navigation field evolves fast so writing survey papers regularly is crucial to keep the research community well-aware of the current status of this field. Second, deep learning methods have revolutionized many fields including autonomous navigation. Therefore, it is necessary to give an appropriate treatment of the role of deep learning in autonomous navigation as well which is covered in this paper. Future works and research gaps will also be discussed

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems

The main objective of this book is to present novel radio frequency (RF) antennas for 5G, IOT, and medical applications. The book is divided into four sections that present the main topics of radio frequency antennas. The rapid growth in development of cellular wireless communication systems over the last twenty years has resulted in most of world population owning smartphones, smart watches, I-pads, and other RF communication devices. Efficient compact wideband antennas are crucial in RF communication devices. This book presents information on planar antennas, cavity antennas, Vivaldi antennas, phased arrays, MIMO antennas, beamforming phased array reconfigurable Pabry-Perot cavity antennas, and time modulated linear array

TN03: Broadcast Scan - Disruptive Technology Search for Space Applications

This Technical Note (TN) documents on Work Package 4000, which is the Broadcast Scan. The aim of this work package is the creation of a search strategy, identify spin-in markets, scan for potential DSTs and perform a pre-selection for further evaluation. It fits within the overall research as the search strategy development part, highlighted in the overall structure of the research, depicted in Figure 1. In this figure, the second chapter covers the Search Method and Techniques Review part in which various technology search methods are reviewed and evaluated. The third chapter focusses on DST Market Identification, in which several external markets are investigated which are of high interest to the space sector. The fourth chapter involves the creation of a DST Search Strategy in which a strategy is devised to identify potential DSTs and store them into a custom designed database. The fifth chapter documents upon the pre-selection of the identified technologies, these criteria are based on the AHP method and the STEP-Criteria explained in TN02