Jing Li

INTELLIGENT SATELLITE DESIGN AND IMPLEMENTATION Integrate cutting-edge technology into spacecraft design with this groundbreaking work Artificial intelligence and machine learning have revolutionized virtually every area of computing and complex engineering, and the design of satellite spacecraft is no exception. Intelligent satellites are increasingly capable of human-like perception, decision-making, and operations, and their problem-solving capacities are still expanding. As AI and machine learning continue to advance, their integration into satellite manufacture will only deepen. Intelligent Satellite Design and Implementation seeks to understand the foundations of this integration and its likely directions in the coming years. Beginning from the basic principles of interaction between artificial intelligence and satellite design and mission planning, the book analyzes a series of current or potential areas of technological advancement to create a comprehensive overview of the subject. Intelligent Satellite Design and Implementation readers will also find: Background information on the introduction and development of artificial intelligenceDetailed discussion of topics including autonomous satellite operation, remote sensing satellites, and many moreOver 100 illustrations and tables to reinforce key concepts Intelligent Satellite Design and Implementation is ideal for graduate students and advanced undergraduates in engineering, computing, and spacecraft design programs, as well as researchers in these and related fields.

This book examines the autonomous management of spacecraft, which uses modern control technologies such as artificial intelligence to establish a remote intelligent body on the spacecraft so that the spacecraft can complete its flight tasks by itself. Its goal is to accurately perceive its own state and external environment without relying on external information injection and control, or rely on external control as little as possible, make various appropriate decisions based on this information and user tasks, and be able to autonomously control spacecraft to complete various tasks.

Spatial Cognitive Engine Technology discusses the increase in user demand for satellite wireless communication services that has led to the increasing development of spectrum resources and the fixed spectrum allocation mode which makes the utilization rate of spectrum resources lower. As an intelligent spectrum sharing technology, cognitive radio has innovated the traditional spectrum management system and is one of the effective ways to solve the above-mentioned problems. As the core of satellite cognitive radio, the spatial cognitive engine can use artificial intelligence to dynamically configure working parameters according to changes in the communication environment and user needs.

LASER INTER-SATELLITE LINKS TECHNOLOGY State of the art resource covering key technologies and related theories of inter-satellite links Laser Inter-Satellite Links Technology explores satellite networking as a growing topic in the field of communication technology, introducing the definition, types, and working frequency bands of inter-satellite links, discussing the number of orbital elements of the spacecraft motion state under two-body motion and their conversion relationship, and establishing the basic demand model for inter-satellite link network, chain topology model, and transmission protocol model. The book focuses on the analysis and introduction of the principles and error sources of microwave and laser inter-satellite ranging, including the basic composition, workflow, and constraints of the laser inter-satellite link, and related design principles of the inter-satellite laser transmitter and receivers. Later chapters also discuss theories and methods of acquisition, alignment, and tracking, the impact of alignment errors on performance, and inter-satellite link modulation and its implementation. Specific sample topics covered in Laser Inter-Satellite Links Technology include: Pulse position modulation (PPM), differential pulse position modulation (DPPM), digital pulse interval modulation (DPIM), and double-head pulse interval modulation (DH-PIM) Basic demand model of inter-satellite link network application, including basic configuration of constellations and inter-satellite transmission networks Inter-satellite ranging accuracy, principles of microwave inter-satellite ranging, and analysis of microwave ranging error sources Effect of tracking error on the beam distribution at the receiving end and influence of tracking and pointing error on communication error rate Laser Inter-Satellite Links Technology serves a completely comprehensive resource on the subject and is a must-have reference for experts and scholars in aerospace, along with graduates and senior undergraduates in related programs of study.

This book helps to solve the problems and challenges of satellite sensing in the current environment of increasing communications bandwidths and multiplicity of electromagnetic signals. It presents technology that makes full use of the broadband low-loss advantages of optoelectronic technology and research into new broadband radio-frequency channelization and receiving technology based on photoelectric sensing. The methods presented allow improvements in system performance in terms of receiving bandwidth, frequency-sensing accuracy, channel equalization, adjacent channel crosstalk, dynamic range, and complexity of the system structure. In addressing the difficulty of satellite spectrum control, including the issue of high-precision and real-time wide-spectrum sensing not being able to be obtained simultaneously, the book solves the problem of accurate and parallel-decomposition sensing technology using the dual-phase optical frequency comb. This method avoids the involvementof fine filtering and does not require fine alignment between the source and the filter but achieves high perceptual accuracy. Satellite Photoelectric Sensing Technology explores the research background, significance, and current challenges associated with the technology, making it relevant and interesting to academics, practitioners, and postgraduate students in this field.

This open access book deals with a rich variety of taxis-type cross-diffusive equations. Particularly, it intends to show the key role played by quasi-energy inequality in the derivation of some necessary a priori estimates. This book addresses applied mathematics and all researchers interested in mathematical development of reaction-diffusion theory and its application and can be a basis for a graduate course in applied mathematics.

This open access book deals with a rich variety of taxis-type cross-diffusive equations. Particularly, it intends to show the key role played by quasi-energy inequality in the derivation of some necessary a priori estimates. This book addresses applied mathematics and all researchers interested in mathematical development of reaction-diffusion theory and its application and can be a basis for a graduate course in applied mathematics.

This book helps to solve the problems and challenges of satellite sensing in the current environment of increasing communications bandwidths and multiplicity of electromagnetic signals. It presents technology that makes full use of the broadband low-loss advantages of optoelectronic technology and research into new broadband radio-frequency channelization and receiving technology based on photoelectric sensing. The methods presented allow improvements in system performance in terms of receiving bandwidth, frequency-sensing accuracy, channel equalization, adjacent channel crosstalk, dynamic range, and complexity of the system structure. In addressing the difficulty of satellite spectrum control, including the issue of high-precision and real-time wide-spectrum sensing not being able to be obtained simultaneously, the book solves the problem of accurate and parallel-decomposition sensing technology using the dual-phase optical frequency comb. This method avoids the involvementof fine filtering and does not require fine alignment between the source and the filter but achieves high perceptual accuracy. Satellite Photoelectric Sensing Technology explores the research background, significance, and current challenges associated with the technology, making it relevant and interesting to academics, practitioners, and postgraduate students in this field.

How can cognition, a concept traditionally associated with the human brain, be applied to satellite systems? For the first time, cognitive system meanings and models are applied to the uncertain environmental processes of satellite systems. The authors of this book go beyond defining 'cognitive satellite systems' to design a cognitive satellite communication system architecture with satellite-to-ground coordination, which has uses in emergency response spacecraft and prediction technology. In this book, the optimal utilization of cognitive satellite system resources is discussed in four aspects:

Einfach Chinesisch lernen Dieses Buch bietet einen leichten Einstieg in die chinesische Sprache und die Schriftzeichen. Sie lernen die chinesische Grammatik, die richtige Betonung und das Meistern von Alltagssituationen: sich auf Chinesisch vorstellen, etwas beschreiben, telefonieren oder ein Hotelzimmer reservieren. Begleitende Dialoge finden Sie online als Audiodateien zum Anhören und Nachsprechen. Außerdem lernen Sie erste Schriftzeichen kennen und können diese mit einfachen Schreibanleitungen üben. Im Anhang des Buches finden Sie Verb-Tabellen und ein kleines Chinesisch-Deutsch-/Deutsch-Chinesisch-Wörterbuch. Sie erfahren Was es mit den vier Tönen auf sich hatWie Sie sich im Alltag zurechtfindenWas Sie über die Kultur in China wissen solltenWie sich chinesische Schriftzeichen zusammensetzen

This book introduces the results that the authors have achieved on the study of functional principle of electroslag remelting for production of high-quality clean steel.

"In a world increasingly reliant on Internet of Things (IoT) devices, ensuring their security is paramount. Yet, these very devices are vulnerable to cyberattacks, posing significant threats to individuals and organizations alike. To combat this, machine learning has emerged as a powerful tool for network intrusion detection in IoT environments. Delving deep into this intersection of cybersecurity and machine learning, this book presents a comprehensive exploration of feature reduction techniques for IoT network intrusion detection. Drawing from extensive research, it offers a meticulous comparison of feature extraction and selection methods within a machine learning-based attack classification framework. Through rigorous analysis of performance metrics such as accuracy, f1-score, and runtime, the book sheds light on the efficacy of these techniques on the heterogeneous IoT dataset known as Network TON-IoT. Unveiling key insights, it reveals that while feature extraction tends to outperform feature selection in detection performance, the latter exhibits advantages in model training and inference time. But the findings don't stop there. The book delves deeper into the nuances of IoT security, addressing the challenges posed by computational resource constraints. It underscores the importance of feature reduction in constructing lightweight yet effective intrusion detection models tailored for IoT scenarios. Moreover, the book offers practical guidance for selecting intrusion detection methods tailored to specific IoT environments. By analyzing the trade-offs between feature extraction and selection, it equips readers with the knowledge to navigate the complexities of IoT security."

The book offers a succinct overview of the technical components of blockchain networks, also known as distributed digital ledger networks. Written from an academic perspective, it surveys ongoing research challenges as well as existing literature. Several chapters illustrate how the mathematical tools of game theory and algorithmic mechanism design can be applied to the analysis, design, and improvement of blockchain network protocols. Using an engineering perspective, insights are provided into how the economic interests of different types of participants shape the behaviors of blockchain systems. Readers are thus provided with a paradigm for developing blockchain consensus protocols and distributed economic mechanisms that regulate the interactions of system participants, thus leading to desired cooperative behaviors in the form of system equilibria. This book will be a vital resource for students and scholars of this budding field.

This book introduces the results that the authors have achieved on the study of functional principle of electroslag remelting for production of high-quality clean steel. The dependence of oxygen, sulfur, and non-metallic inclusions on the processing parameters of electroslag remelting is assessed. The fundamentals and technologies of clean steel production by electroslag remelting have been applied in the round to discuss oxygen, sulfur, and non-metallic inclusions evolution and control. A general concluding remark and a perspective for future work are present. The book is likely to be of interest to university teachers, researchers, R&D engineers, and graduate students in material processing and pyrometallurgy who wish to explore innovative technologies that lead to more energy-efficient and environmentally sustainable clean steel production.

Das Buch untersucht aus einer sprach- und kulturvergleichenden Perspektive deutsches und chinesisches Danken im akademischen Bereich. Im Rahmen eines integrativen theoretischen Ansatzes wird eine quantitative und qualitative korpusbasierte vergleichende Analyse deutscher und chinesischer Monographie-Danksagungen unternommen. Das Datenkorpus bilden insgesamt 404 deutsche und chinesische Monographie-Danksagungen. Mit Hilfe der empirischen Analyse werden die Ergebnisse gezeigt: Sowohl die deutschen als auch die chinesischen Monographie-Danksagungen sind durch eine Reihe von charakteristischen textuellen und verbalen bzw. paraverbalen Merkmalen gekennzeichnet. Zugleich weichen sie in verschiedenen sprach- und kulturbedingten Eigenheiten voneinander ab.

This book summarizes the research results of carbide control in special steel from the authors. It includes the evolution and control of carbide in special steel in the process of electroslag remelting, rolling, and heat treatment, as well as the effect of alloying treatment (rare earth, magnesium, nitrogen, titanium) as heterogeneous nucleating agent on the carbides in special steel. It helps the readers to understand the formation mechanism and control technology of carbide in special steel deeply for improving the quality of special steel further. The book is useful as a reference for researchers, practitioners, teachers, and engineering management team in the fields of metallurgy and materials.