This book serves as an introduction to satellite communications, targeting both university lectures and practical engineers. It covers geostationary satellite communications in detail, including Satcom networks, link budgets, and antenna design. Advanced systems like High Throughput Satellites and IRIDIUM are also discussed.
„Space is radioactive“. This was the most striking outcome of the early US Explorer space missions of 1958 which revealed belts of energetic charged particles trapped in the Earth's magnetic field. These regions which are named Van Allen Belts after their discoverer, James Van Allen, are the most known, but not the only source of high energy particles in space. This book gives an overview of the physics of the Earth's environment and of interplanetary space as they interact with energetic particles of solar and galactic origin and describes the methods to asses the impact of radiation on spacecraft and spaceborne electronics. It is intended for Master students of Aerospace Engineering, Physics and Electrical Engineering as well as for engineers and scientists working in the field, designing spacecraft and space equipment susceptible to space radiation.
„Space is radioactive“. This was the most striking outcome of the early US Explorer space missions of 1958 which revealed belts of energetic charged particles trapped in the Earth's magnetic field. These regions which are named Van Allen Belts after their discoverer, James Van Allen, are the most known, but not the only source of high energy particles in space. This book gives an overview of the physics of the Earth's environment and of interplanetary space as they interact with energetic particles of solar and galactic origin and describes the methods to asses the impact of radiation on spacecraft and spaceborne electronics. It is intended for Master students of Aerospace Engineering, Physics and Electrical Engineering as well as for engineers and scientists working in the field, designing spacecraft and space equipment susceptible to space radiation.
1812/1813. Napoléon zieht nach Russland, um die Ostflanke seines Imperiums zu sichern... Eine Geschichte von Gefolgschaft und Flucht, Exil und scheu gemiedener Heimkehr: Der übermächtige Schatten Napoléons fällt auf das Schicksal des jungen Ferdinand. Können Christian und Yvonne das Rätsel um den zweifach verschollenen Ahnen lösen? - ein historischer Roman
Riufret ist Okzitanisch und bedeutet 'Kalter Fluss'. Es handelt sich um einen Wildbach, der sich vom Hauptkamm der Pyrenäen zur Ariège ergießt und der eines der entlegensten Täler des westlichen Europas entwässert. Dort trifft der Erzähler auf seinen Protagonisten, den katalanischen Partisanen Jordi, Kämpfer im spanischen Bürgerkrieg und Fluchthelfer über den Gebirgskamm. Immer wieder findet Jordi den Weg zurück in sein Heimatdorf, zur dunkelhaarigen, doch helläugigen Montserrat. Eines Tages erhält er den Auftrag, die belgische Jüdin Rachel vor den Häschern der Nazis über das Gebirge in Sicherheit zu bringen, und sie ist es, die das Zeichen entdeckt, das er trägt.