Improving Interference Immunity for Onboard Radar of Anti-aircraft Missile, Evgeny Markin
Автор: Mcnab, Chris Название: Sagger anti-tank missile vs m60 main battle tank ISBN: 1472825772 ISBN-13(EAN): 9781472825773 Издательство: Osprey Рейтинг: Цена: 2375.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The 1973 Yom Kippur War rewrote the textbook on the tactics of modern armored warfare. Unlike the previous major Arab-Israeli war of 1967, the Israeli Defense Forces (IDF) faced an enemy that had invested heavily in modern Soviet weapon systems and tactics. Using detailed colour artwork and insightful analysis, this book explains how the effective use of the Soviet-supplied AT-3 Sagger (9M14 Malyutka) anti-tank missile allowed small Arab tank-killing teams to destroy Israeli armor at an astonishing rate.
It also analyses the tank that opposed it, the US-built M60A1, which had to fight for survival against the Arab Saggers, and shows how in both the Sinai and the Golan Heights, the IDF quickly learned that firepower and infantry/artillery cooperation were the keys to their survival.
"The Committee found that the Russian government engaged in an aggressive, multi-faceted effort to influence, or attempt to influence, the outcome of the 2016 presidential election." -US Senate Intelligence Committee (August 18, 2020)
Report of the Select Committee on Intelligence: US Senate on Russian Active Measures, Campaigns, and Interference in the 2016 US Election is a five-volume, 1,300 page investigation, that was undertaken by this US Senate Committee (separately from The Mueller Report, 2019, also available from Cosimo Reports).
The five volumes are:
- Volume I-Russian Efforts Against Election Infrastructure (July 25, 2019)
- Volume II-Russia's Use of Social Media (October 8, 2019)
- Volume III-US Government Response to Russian Activities (February 6, 2020)
- Volume IV-Review of the Intelligence Community Assessment (April 21, 2020)
- Volume V-Counterintelligence Threats and Vulnerabilities (August 18, 2020)
Even though parts of specifically report Volume IV are redacted, this whole set offers valuable insights to students of political science, historians and anyone interested in foreign interference in US elections and the inner workings of US politics.
Автор: Lu Yang; Wei Zhang Название: Interference Coordination for 5G Cellular Networks ISBN: 3319247212 ISBN-13(EAN): 9783319247212 Издательство: Springer Рейтинг: Цена: 6986.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This SpringerBrief presents interference coordination techniques for future 5G cellular networks. The proposed schemes aim to deal with the inter-cell interference in multi-cell MIMO networks, cross-tier interference in device-to-device communications underlaying cellular network, and inter-network interference in cognitive radio networks.
Автор: Shyamnath Gollakota Название: Embracing Interference in Wireless Systems ISBN: 162705474X ISBN-13(EAN): 9781627054744 Издательство: Mare Nostrum (Eurospan) Рейтинг: Цена: 9286.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The wireless medium is a shared resource. If nearby devices transmit at the same time, their signals interfere, resulting in a collision. In traditional networks, collisions cause the loss of the transmitted information. For this reason, wireless networks have been designed with the assumption that interference is intrinsically harmful and must be avoided. This book, a revised version of the author's award-winning Ph.D. dissertation, takes an alternate approach: Instead of viewing interference as an inherently counterproductive phenomenon that should to be avoided, we design practical systems that transform interference into a harmless, and even a beneficial phenomenon. To achieve this goal, we consider how wireless signals interact when they interfere, and use this understanding in our system designs. Specifically, when interference occurs, the signals get mixed on the wireless medium. By understanding the parameters of this mixing, we can invert the mixing and decode the interfered packets; thus, making interference harmless. Furthermore, we can control this mixing process to create strategic interference that allow decodability at a particular receiver of interest, but prevent decodability at unintended receivers and adversaries. Hence, we can transform interference into a beneficial phenomenon that provides security. Building on this approach, we make four main contributions: We present the first WiFi receiver that can successfully reconstruct the transmitted information in the presence of packet collisions. Next, we introduce a WiFi receiver design that can decode in the presence of high-power cross-technology interference from devices like baby monitors, cordless phones, microwave ovens, or even unknown technologies. We then show how we can harness interference to improve security. In particular, we develop the first system that secures an insecure medical implant without any modification to the implant itself. Finally, we present a solution that establishes secure connections between any two WiFi devices, without having users enter passwords or use pre-shared secret keys.
Описание: The report of Special Counsel Robert S. Mueller III on the investigation into Russian interference in the 2016 U.S. presidential election, as released by Attorney General William Barr on April 18, 2019.
Is it possible for two objects to be in two places at once? Can cause and effect happen in reverse? Is time travel possible?
Believe it or not, it is possible: welcome to the Quantum World
Unlike other arguments, however, the real difficulty is not in understanding, but in accepting something completely senseless, precisely in the right meaning of the term: not sensible, that is, contrary to the perception of our senses. You will notice that quantum mechanics is much "easier" than the theory of relativity.
In fact, you could get a child to help you digest certain concepts. The great difficulty does not lie in their complexity, but their absurdity in terms of logic acquired after many years of existence in a world that constantly follows certain rules. The more the brain is free of preconceptions and ingrained notions, the better it is.
You will learn:
What is interference;
The Double-Slit Experiment;
Quantum wave function;
Feynman's works;
The relation between waves and particles;
The Heisenberg Uncertainty Principle;
How particles can be in multiple places at once;
Quantum entanglement;
The Schr dinger's cat thought experiment;
The Copenhagen interpretation and need for an observer;
...and much more
Quantum Physics is at the basis of all the technological innovations of today, from atomic energy to computer microelectronics, from digital clocks to lasers, semiconductor systems, photoelectric cells, diagnostic and treatment equipment for many diseases. In short, today we can live in a "modern" way thanks to Quantum Physics and its applications.
This comprehensive beginner's guide to quantum mechanics explains the most important and stunning quantum experiments that show quantum physics is real.
Are you ready? Let's dive deep into the fascinating science of Quantum Physics.
Happy reading
Автор: Markel Matthew Название: Interference Mitigation for GPS Based Attitude Determination ISBN: 0530004356 ISBN-13(EAN): 9780530004358 Издательство: Неизвестно Рейтинг: Цена: 17105.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Abstract: With its low transmit power and considerable orbit distance from receivers, the Global positioning system (GPS) waveforms are known to be susceptible to jamming. Efforts to date have investigated various receiver designs and adaptive antenna arrays to improve the anti-jam capabilities of GPS position location, but until this work no extension of anti-jam capabilities to attitude determination (determination of the orientation of a body in space) existed. This dissertation provides a comprehensive investigation into the new field of robust, jam-resistant attitude determination using the Global Positioning System. We present a generic adaptive antenna array and receiver design that provide the necessary data for both position location and attitude determination in a jammed environment. Using the data this receiver provides we develop a new maximum likelihood attitude estimator (the MLAE) that provides attitude determination capability even in jammed environments. In order to accomplish this, new ways of viewing the standard array processing and direction finding tenants are presented. This leads to a new interpretation and parameterization of the array response vector (spatial steering vector) and secondary data covariance matrix. The MLAE optimally includes information from all satellites in view, and its performance is shown herein to asymptotically achieve the Cramer-Rao Bound (CRB), i.e. the MLAE asymptotically achieves the performance limit for unbiased estimators. As an approximation to this estimator, a second estimator is developed that, at the expense of performance, may provide increased computational capability. Two versions of this second estimator are presented that combine direction nding with attitude estimation. A method of optimally incorporating data from both GPS frequencies into the estimation is developed. This approach maintains the jammer mitigation capabilities of the previous estimators and allows for a larger array spacing, therefore increasing the accuracy of the attitude estimates. Simulation based performance results of the various estimators are presented for various antenna topologies and interference scenarios. The simulation results indicate that the new algorithms provide signicant improvement over conventional attitude determination methods. In addition, the MLAE is shown to provide better performance than conventional methods of attitude determination even in unjammed environments. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Interference Mitigation for GPS Based Attitude Determination" by Matthew David Markel, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.
Автор: Jonatha M. Gott Название: RNA Interference, Editing, and Modification ISBN: 1617374458 ISBN-13(EAN): 9781617374456 Издательство: Springer Рейтинг: Цена: 23058.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
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