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UWB RADAR

    the bandwidth of the UWB signal) is at least 25% of the center frequency.e. The transmitted signal is significant for its very light power spectrum, which is lower than the allowed unintentional radiated emissions for electronics.jpg">

    Ultra Wideband (UWB) radar systems transmit signals across a much wider frequency than conventional radar systems and are usually very difficult to detect. Often the absolute bandwidth is bigger than 1 GHz. The most common technique for generating a UWB signal is to transmit pulses with very short durations (less than 1 nanosecond). These very short pulses need a wider receiver bandwith as conventional radar systems.wikimedia.

    The spectrum of a very narrow-width pulse has a very large frequency spectrum approaching that of white noise as the pulse becomes narrower and narrower.org/wikipedia/commons/thumb/9/90/Radar_antenna.jpg/220px-Radar_antenna. Thus, a UWB signal centered at 2 GHz would have a minimum bandwidth of 500 MHz and the minimum bandwidth of a UWB signal centered at 4 GHz would be 1 GHz.

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    The amount of spectrum occupied by a signal transmitted by a UWB-radar (i
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    ارسال شده در تاریخ دوشنبه 26 فروردين 1392 [ گزارش پست ]

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