Mobile satellite services are set to change with the imminent launch of satellite personal communication services (S-PCS), through the use of non-geostationary satellites. This new generation of satellites will be placed in low earth orbit or medium earth orbit, hence, introducing new satellite design concepts. One of the first texts to cover this rapidly evolving field, this text provides the reader with an overview of mobile satellite systems, from their initial introduction (Inmarsat), current satellite-PCS (referring to such systems as Globalstar), through to Satellite-UMTS and an understanding of the following: * The design concepts associated with non-geostationary satellite systems (constellation, link budgets, Doppler) * The concepts of UMTS (network architecture, aims, in the context of IMT-2000) and the role foreseen for the satellite component (complementary to terrestrial network, network extension, global availability) * Inter-working between satellite and terrestrial networks (network architecture, ATM Adaptation Layer) * Radio interface technologies (WB-CDMA, TDMA, transmission environment) * Regulatory issues * Future services and applications * Potential satellite markets (prediction techniques, effect of tariffing policies on potential market) With leading edge information, this valuable resource will be indispensable to researchers, engineers, operators and market evaluators in satellite service industries and research institutions, as well as postgraduates and research students in the field.
“...a fascinating and well-told story of the American Revolution in South Carolina—and of its ramifications across racial and national boundaries.” —Walter Edgar, author of South Carolina: A History "The author brings to life the challenges and opportunities that the American Revolution brought to African Americans in the South in this engaging account of a free black man's wartime experience and postwar friendship with a British officer he rescued from the battlefield." —Jim Piecuch, author of Three Peoples, One King: Loyalists, Indians, and Slaves in the Revolutionary South Until publication of this book, virtually nothing was known about Tony Small, the African American from South Carolina who helped further an existing revolutionary spirit of liberty in Ireland as much as Lafayette did in France. For the first time, Robert Black brings Small to life in a work of creative nonfiction that includes his influence upon Lord Edward Fitzgerald, the military commander in the United Irishmen’s revolution against British rule in Dublin between 1796–1798, whose life Small saved at the Battle of Eutaw Springs in 1781. Tony Small is a real person, the main character in the book. Everyone else when named in the book is also a real person, and most are black. The book records the names of over two hundred documented African Americans and creates a fictional narrative for many of them. Their voices and Small’s in Part I give fictional context to moral, social, and revolutionary realities during America’s first civil war. The appendices, notes, maps, and exhibits in Part II firmly anchor fictional detail to historically recorded facts. By bringing to light the story of remarkable figures in eighteenth-century American, Irish, Canadian, English, and French history, the book is unequaled as a record of mutual respect and devotion between two men that begins on the level battle ground at Eutaw Springs. It also creates an account of African Americans not as mere slaves or free black men and women who do manual labor, but as soldiers and patriots of the highest order to help establish the new republic.
Many text books have been written on the subject "Exploration Geophysics". The majority of these texts focus on the theory and the mathematical treatment of the subject matter but lack treatment of practical aspects of geophysical exploration. This text is written in simple English to explain the physical meaning of jargon, or terms used in the industry. It describes how seismic data is acquired in 2-D and 3-D, how they are processed to convert the raw data to seismic vertical and horizontal cross sections, that are geologically meaningful, and how these and other data are interpreted to delineate a prospect. Workshops are included after each chapter and are designed to reinforce learning of the concepts presented. Key Features: Written in simple easy to understand language Heavily illustrated to aid in understanding the text End of chapter "Key words and workshop" The text includes several appendices and answers for the selected workshop problems
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