Jianjun Zhang – författare

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.Describes the concept of cognitive engine from the perspective of the spatial cognitive cycleIncludes coverage of in-depth research on the input module of the spatial cognition engine, the environmental perception moduleProvides in-depth research that has been conducted on the learning reasoning and optimization decision-making modules of the spatial cognition engineCovers the cross-layer optimization of the spatial cognition engine to realize an intelligent and complete satellite communication mechanism

Since China began an era of market reform three decades ago, many Westerners believed that, political liberalization and, eventually, democracy would follow. However, contrary to Western expectations, China remains an authoritarian country and the communist party is still in power, even though the country has witnessed rapid economic growth and its people have become richer.In Marketization and Democracy in China, Jianjun Zhang questions whether China’s market reforms have created favorable social conditions for democracy, whether the country’s emerging entrepreneurial class will serve as the democratic social base, and the role of government in the process of transition. Based upon a careful analysis of two regions—Sunan and Wenzhou —the two prototypical local development patterns in China, Zhang finds that different patterns of economic development have produced distinct local-level social and political configurations, only one of which is likely to foster the growth of democratic practices. The results suggest that China’s political future is largely dependent upon the emerging class structure and offer a warning on China’s development: if market reforms and economic development only enrich a few, then democratic transition will be unlikely. Marketization and Democracy in China will be of interest to scholars of Chinese politics, political science and development studies.

Since China began an era of market reform three decades ago, many Westerners believed that, political liberalization and, eventually, democracy would follow. However, contrary to Western expectations, China remains an authoritarian country and the communist party is still in power, even though the country has witnessed rapid economic growth and its people have become richer.In Marketization and Democracy in China, Jianjun Zhang questions whether China’s market reforms have created favorable social conditions for democracy, whether the country’s emerging entrepreneurial class will serve as the democratic social base, and the role of government in the process of transition. Based upon a careful analysis of two regions—Sunan and Wenzhou —the two prototypical local development patterns in China, Zhang finds that different patterns of economic development have produced distinct local-level social and political configurations, only one of which is likely to foster the growth of democratic practices. The results suggest that China’s political future is largely dependent upon the emerging class structure and offer a warning on China’s development: if market reforms and economic development only enrich a few, then democratic transition will be unlikely. Marketization and Democracy in China will be of interest to scholars of Chinese politics, political science and development studies.

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.

Divides the autonomous management level of spacecraft into two levels: - Basic autonomy to meet spacecraft health requirements, namely, autonomous health management, and autonomy of the advanced stage.Divides the implementation of spacecraft autonomous management into three aspects: - Autonomous health management of spacecraft - the spacecraft can monitor and sense its own state and can autonomously detect, isolate, and recover from faults. - Autonomous mission management - the spacecraft can directly receive the mission, formulate a reasonable plan according to the current state and working environment of the spacecraft, and convert the mission into a specific sequence of instructions. - Spacecraft autonomous data management - the spacecraft processes a large amount of raw data and extracts useful information and autonomously executes or changes flight tasks.The autonomous management model of the spacecraft is divided into two points: - Compatibility - the existing traditional control systems belong to the execution layer logic and are compatible with the existing systems. - Scalability - it adopts a layered structure, and each layer has different autonomous capabilities.

Resilient Integrated Space Information Network: A Space-Based Network for Communication Transmission, Spatiotemporal Measurement and Cross-Domain Interconnection provides readers with expert proposals for top-level architecture design ideas and key technologies for future large-scale, complex space network systems. The book clarifies technical issues and challenges encountered in the development and deployment of large-scale spatial network systems. Presents readers with a detailed analysis of the current status and trends in the field. Basic theory and advanced technology of the deployment and application of communication satellite constellations are described in detail, providing readers with an important reference for theoretical research and engineering practice. The book provides readers technical support for the future construction and implementation of global satellite information networks, greatly enhancing the technological strength of innovation and beyond development in the space field.Resilient Integrated Space Information Network: A Space-based Network for Communication Transmission, Spatiotemporal Measurement and Cross-Domain provides comprehensive coverage of space-based network architecture, addressing the connectivity, collaboration and interoperability of satellites, which sets it apart from competitors focusing on individual satellite technologiesThe basic theory and advanced technology of the deployment and application of communication satellite constellations are presented in detail, providing an important reference for theoretical research and engineering practiceCombines research achievements in fields such as artificial intelligence, big data and the cloud processing we aim to achieve the ability to optimize and restructure intelligent space-based networks, intelligent node equipment and intelligent task planningProposes the top-level architecture design ideas and key technologies for future large-scale complex space network system

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 networksInter-satellite ranging accuracy, principles of microwave inter-satellite ranging, and analysis of microwave ranging error sourcesEffect of tracking error on the beam distribution at the receiving end and influence of tracking and pointing error on communication error rateLaser 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.

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 conceptsIntelligent 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 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 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 book sets forth the explorations and thoughts on Chinese enterprise management practices from both academic and practical perspective, extracts the management theory of Chinese characteristics, and represents the efforts to establish and develop Chinese organization and management.

This book sets forth the explorations and thoughts on Chinese enterprise management practices from both academic and practical perspective, extracts the management theory of Chinese characteristics, and represents the efforts to establish and develop Chinese organization and management.

This book examines the economic, cultural and structural factors affecting China's economic growth, and expounds why China's economy has been so successful in the past, and the challenges that lie ahead for the country amidst the changing world, new challenges and uncertainties. The authors lay out their thoughts persuasively and powerfully, advocating changes that should be implemented in order to achieve a successful economic transformation of China's economy. Through an exchange of ideas among the four Chinese authors, each of whom hail from different backgrounds, practical solutions are presented in the book.

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: