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For more than 50 years, since early work beginning in 1960 [1], ultra-wideband (UWB) technology has been developed to analytically verify the transient behavior of a class of transverse electromagnetic mode microwave networks. The U.S. Federal Communications Commission has defined UWB as operating with a minimum fractional bandwidth of 20% or with a minimum -10-dB bandwidth of 500 MHz [2].
A single channel stepped-frequency continuous wave (SFCW) radar has the drawback of long data acquisition time which may discourage its use; hence we propose a multi-channel SFCW ultra wideband radar which simultaneously transmits four frequencies so the data acquisition time can be significantly reduced. Additionally, by using a compressive sensing (CS) based signal reconstruction method, we can...
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