International Time and Weather Radio-Telegraphic Signals
نویسندگان
چکیده
منابع مشابه
Telegraphic Reviews
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. Mathematical Association of America is collaborating with ...
متن کاملInternational Comparison of Atomic Frequency Standards Via VLF Radio Signals
A study was made of data obtained over an 18-month period (July 1961 to December 1962, inclusive) on the comparison of atomic frequency standards located in seven laboratories in the United States, Europe, and Canada, using the VLF signals of GBR (16 kc/s), Rugby, England, and NBA (18kc/s), Balboa, Canal Zone. Each laboratory observes the accumulated difference in phase over a 24-hr period (the...
متن کاملSolar Radio Bursts and Space Weather
Space Weather is the study of the conditions in the solar wind that can affect life on the surface of the Earth, particularly the increasingly technologically sophisticated devices that are part of modern life. Solar radio observations are relevant to such phenomena because they generally originate as events in the solar atmosphere, including flares, coronal mass ejections and shocks, that prod...
متن کاملAnalyzing Telegraphic Messages
The particular class of messages which we have studied are a set of Navy tactical messages called RAINFORM (ship) sighting messages [8]. Several other researchers have previously constructed systems to analyze these messages. In the NOMAD system [1] the knowledge was principally realized as procedures associated with individual words. This made it difficult to extend the system, as Granger has ...
متن کاملComputer simulation of weather radar signals
Abstract: Computer simulation is largely used in radar signal analysis. This present work treats the simulation of precipitation echoes in weather radar application. where two different approaches are used for simulating weather radar signals. These simulated signals offer great potential for estimating spectral moment and various polarimetric variables .One of the methods uses a time domain ap...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1913
ISSN: 0028-0836,1476-4687
DOI: 10.1038/091033b0