Xem 1-5 trên 5 kết quả Radio emission
  • Airborne instruments designed for remote sensing of the surface of the Earth and its atmosphere are important sources of information regarding the processes occurring on Earth. This information is used widely in the fields of meteorology, geography, geology, and oceanology, among other branches of the sciences.

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  • What is it? RADAR to detect position of objects. Counter measures 1. ECM ( e.g. chaff cartridges) 2. Non ECM. Avoiding detection and innovating deception . RCS reductions, acoustics, thermal and other EM emissions.How is it achieved. Absorbs radar waves or deflects to other directions. Minimizes heat and other emissions from engine and other spots. Makes difficult to detect except closely.Vehicle shape and structure.Smooth edges maximum radio wave reflectors.

    ppt21p dangan91 21-12-2012 21 7   Download

  • The projected CO2 concentration may reach 850 ppm by the end of the 21st century (Nakicenovic & Swart, 2000), which is about triple of the pre-industrial concentration level (280 ppm). The global emission scenario B2 describes a world with intermediate population and economic growth, emphasizing local solutions to economic, social, and environmental sustainability.

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  • This textbook is intended as an introduction to the physics of solar and stellar coronae, emphasizing kinetic plasma processes. It is addressed to observational astronomers, graduate students, and advanced undergraduates without a background in plasma physics. Coronal physics is today a vast field with many different aims and goals. Sorting out the really important aspects of an observed phenomenon and using the physics best suited for the case is a formidable problem.

    pdf320p tom_123 14-11-2012 17 2   Download

  • Introduction to Space Sciences and Spacecraft Applications explains the fundamentals of design, application, and operation of space-based systems. It focuses on the most common uses of spacecraft today: communications, remote sensing, and navigation. You will learn about the basic systems required by most spacecraft and the methodology used to design a spacecraft. The complexities of orbital mechanics are also fully explained. Amply illustrated with diagrams and photographs, each chapter contains exercises, historical information, and additional reference materials.

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