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- W2291885212 abstract "ed intelligence signals. 7.0 Russian Systems There has been extensive development of UWB systems and subsystems in the former Soviet Union and the present Russian Federation. The work arose out of programs to improve power systems in the 1950s. Even at this stage, the difference was noted between conventional continuous wave signal description methods and ultrashort pulse methods (e.g., Zernov, 1951). The simplicity of the methods of time domain analysis for short pulse UWB signals, as opposed to continuous, steady state signals, was described by Kharcevitch (1952). Initially, radio pulses of nanosecond duration were generated using traveling wave tube modulation (Astanin & Kardo-Sysoev, 2000). In 1957 Astanin at the A. Mozjaisky Military Air Force Academy developed an X-band 0.5 nanosecond duration transmitter for waveguide study. A receiver-correlator with a T-bridge waveguide and mechanically controlled delay was used (Astanin, 1964). At the same time, at the Radioelectronics Institute of the USSR Academy of Science, Kobzarev and collaborators conducted tests on indoor ranges of ultrashort pulse high resolution radars. These constituted the first stage of development of UWB systems in Russia (Astanin & KardoSysoev, 2000). The next stage of development utilized fast semiconductor switches, beginning with Shatz (1963), and continuing at the Ioffe Physico-Technical Institute (see below). As in the United States, progress was facilitated by the availability of fast sampling" @default.
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- W2291885212 date "2000-01-01" @default.
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- W2291885212 title "History of UltraWideBand (UWB) Radar & Communications: Pioneers and Innovators" @default.
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