The rapidly increasing variety of communication media and growing shortness of suitable DF sites require widearea networking of DF instrumentation and operator positions of large radiomonitoring systems. A condition for networking is that the detected data are reduced and processed at the DF site considering that an extremely large volume of raw data is obtained by the direction finder when frequency-agile signals and short-term emissions are monitored. Rohde & Schwarz has taken up this challenge with scanning and monitoring direction finders of the DDF (digital direction finder) family coupled with new software.
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