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"Lasers Military applications."
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Military Laser Technology and Systems
This new resource provides an insight into the physical principles of the device technology that underpins many laser-based military systems in one form or another. From this knowledge a deeper understanding of the fundamental requirements and the potential performance, as well as limitations of such systems may be assessed, given the appropriate operational parameters. Engineers and students are provided with practical advice on how to evaluate laser devices and systems, operate them safely, and train with them.
eBook
The adaptive optics revolution : a history
Duffner has compiled the history of the most revolutionary breakthrough in astronomy since Galileo pointed his telescope skyward--the technology that will greatly expand our understanding of the universe.
eBook
Optoelectronics for Low-Intensity Conflicts and Homeland Security
This authoritative new resource provides an overview of the deployment of various devices in systems in actual field conditions and efficacy established in warfare. The book covers laser and optronic technologies that have evolved over the years to build practical devices and systems for use in Homeland Security and low-intensity conflict scenarios. Readers will be able to assess combat and battle-worthiness of various available devices and systems.This book covers state-of-the-art and emerging trends in various optoelectronics technologies having applications in Homeland Security. It provides information on operational aspects, deployment scenarios, and actual usage of laser and optoelectronics based technologies for low intensity conflicts, offering insight into the utility of each technology/device for a given operational requirement.This book evaluates the merits of various laser and optoelectronic sensor based technologies intended for low intensity conflict operations, including counter-insurgency and anti-terrorist operations. It is a useful reference for those specializing in defense electronics and optronics and professionals in the defence industry involved in operation and maintenance of laser based security equipment. Packed with tables, photographs, and a comprehensive list of references in every chapter, this is the only book that covers all topics related to Laser and Optoelectronics devices intended for low intensity conflict operations in a single volume.
eBook
Selected Directed Energy Research and Development for U.S. Air Force Aircraft Applications
The U. S. Air force currently invests significantly in science and technology for directed-energy weapon (DEW) systems. Key elements of this investment include high-energy lasers and high-power microwaves. Other DEW research and development efforts include: optical beam control for high-energy lasers; vulnerability and lethality assessments; and advanced non-conventional and innovative weapons.
Selected Directed Energy Research and Development for U.S. Air Force Aircraft Applications is the summary of three workshop sessions convened between February and April, 2013 by the Air Force Studies Board of the National Academies' National Research Council. Representatives from the Air Force science and technology community and DEW experts from the U.S. Army, U.S. Navy, Office of the Secretary of Defense, and the Defense Advanced Research Projects Agency presented and discussed threats that DEW capabilities might defend against and assessments of foreign progress in DEW. This report examines the current status of DEW capabilities both in the U.S. and abroad, and considers future applications of DEW systems.
eBook
Ring laser gyroscope technology: a review of precision navigation and sensing applications
The Ring Laser Gyroscope (RLG) technology has revolutionized precision navigation and sensing, which is vital in applications where precision, stability, and durability are paramount. RLGs operate based on the Sagnac effect; in this system, laser light beams traveling in opposite directions around a closed-loop cavity produce an interference pattern that shifts with rotation. This capability enables RLGs to detect minimal angular variations with exceptional accuracy, making them suitable for aerospace, maritime, Defence applications, and emerging fields like autonomous vehicles and geoscience. Unlike traditional mechanical gyroscopes, RLGs have no moving parts, enhancing their durability and reducing maintenance requirements. Recent advancements in optical engineering, laser stability, and noise reduction have further increased RLG precision, allowing them to perform reliably in extreme conditions, such as high vibrations and temperatures. This paper reviews the foundational principles of RLG technology, its advantages over Fiber Optic Gyroscopes (FOGs), and its expanding range of applications. Through mathematical Modelling and technological innovations, RLG technology continues to meet the stringent standards necessary for modern navigation and sensing, providing significant improvements in both scientific and practical contexts.
Journal Article
A Comprehensive Review of Micro UAV Charging Techniques
The groundbreaking Unmanned Aerial Vehicles (UAVs) technology has gained significant attention from both academia and industrial experts due to several applications, such as military missions, power lines inspection, precision agriculture, remote sensing, delivery services, traffic monitoring and many more. UAVs are expected to become a mainstream delivery element by 2040 to address the ever-increasing demand for delivery services. Similarly, UAV-assisted monitoring approaches will automate the inspection process, lowering mission costs, increasing access to remote locations and saving time and energy. Despite the fact that unmanned aerial vehicles (UAVs) are gaining popularity in both military and civilian applications, they have a number of limitations and critical problems that must be addressed in order for missions to be effective. One of the most difficult and time-consuming tasks is charging UAVs. UAVs’ mission length and travel distance are constrained by their low battery endurance. There is a need to study multi-UAV charging systems to overcome battery capacity limitations, allowing UAVs to be used for a variety of services while saving time and human resources. Wired and Wireless Power Transfer (WPT) systems have emerged as viable options to successfully solve this difficulty. In the past, several research surveys have focused on crucial aspects of wireless UAV charging. In this review, we have also examined the most emerging charging techniques for UAVs such as laser power transfer (LPT), distributed laser charging (DLC), simultaneous wireless information and power transfer (SWIPT) and simultaneous light wave information and power transfer (SLIPT). The classification and types of UAVs, as well as various battery charging methods, are all discussed in this paper. We’ve also addressed a number of difficulties and solutions for safe operation. In the final section, we have briefly discussed future research directions.
Journal Article
Superelastic graphene aerogel-based metamaterials
Ultralight, ultrastrong, and supertough graphene aerogel metamaterials combining with multi-functionalities are promising for future military and domestic applications. However, the unsatisfactory mechanical performances and lack of the multiscale structural regulation still impede the development of graphene aerogels. Herein, we demonstrate a laser-engraving strategy toward graphene meta-aerogels (GmAs) with unusual characters. As the prerequisite, the nanofiber-reinforced networks convert the graphene walls’ deformation from the microscopic buckling to the bulk deformation during the compression process, ensuring the highly elastic, robust, and stiff nature. Accordingly, laser-engraving enables arbitrary regulation on the macro-configurations of GmAs with rich geometries and appealing characteristics such as large stretchability of 5400% reversible elongation, ultralight specific weight as small as 0.1 mg cm
−3
, and ultrawide Poisson’s ratio range from −0.95 to 1.64. Additionally, incorporating specific components into the pre-designed meta-structures could further achieve diversified functionalities.
Graphene aerogels are highly porous and have very low density; despite this they also exhibit high mechanical strength. Here the authors present a laser-engraving strategy for producing graphene meta-aerogels with different configurations and properties.
Journal Article
Fiber Lasers – Advancing the Frontier of High Power Light
During the last two and a half decades fiber lasers underwent a revolutionary transformation in their power from initially operating at Watt level to currently capable of producing multi-kW beams. This enabled a widespread use of fiber lasers in a wide range of industrial and defense applications. These revolutionary advances in power and energy are continuing, mostly along the path of coherent and incoherent combining of multiple fiber lasers, which exploits the advantage inherent in fiber technologies for monolithic integration to achieve compact and robust systems even with a large number of parallel laser channels. This is a particularly promising pathway for scaling powers and energies of ultrashort pulse lasers for driving secondary radiation sources of energetic accelerated electrons and positrons, as well as generating high energy neutrons, protons, gamma rays and high-brightness X-rays, which promise new application areas ranging from fundamental science to material science, biology, medicine, and numerous new industrial uses. This summer school lecture will cover fundamentals of rare-earth doped fiber lasers, will describe numerous innovations that enabled ultra-large core fibers constituting the foundation of high power lasers, will survey state-of-the-art performance of different types of laser systems, and will review recent progress in coherently combined fiber lasers.
Journal Article
Mapping Forest Parameters to Model the Mobility of Terrain Vehicles
This study aims to evaluate the feasibility of using non-contact data collection methods—specifically, UAV (unmanned aerial vehicle)-based and terrestrial laser scanning technologies—to assess forest stand passability, which is crucial for military operations. The research was conducted in a mixed forest stand in the Březina military training area, where the position of trees and their DBHs (Diameter Breast Heights) were recorded. The study compared the effectiveness of different methods, including UAV RGB imaging, UAV-LiDAR, and handheld mobile laser scanning (HMLS), in detecting tree positions and estimating DBH. The results indicate that HMLS data provided the highest number of detected trees and the most accurate positioning relative to the reference measurements. UAV-LiDAR showed better tree detection compared to UAV RGB imaging, though both aerial methods struggled with canopy penetration in densely structured forests. The study also found significant variability in DBH estimation, especially in complex forest stands, highlighting the challenges of accurate tree detection in diverse environments. The findings suggest that while current non-contact methods show promise, further refinement and integration of data sources are necessary to improve their applicability for assessing forest passability in military or rescue contexts.
Journal Article