Abstract
The UWB signals for radar applications can be generated from time domain or frequency domain. Because of the limited energy, the time domain UWB signal or impulse signal is usually applied for short range radar, such as ground penetrating radar(GPR) and through-wall-imaging radar(TWIR). In opposition to it, the frequency domain UWB signals can be applied both for short-and far-range imaging radar, such as GPR, TWIR or airborne UWB synthetic aperture radar(SAR). The UWB radar research has been carried out from 1980s in China. But its really flourishing and mature era was from the middle of 1990s. This paper reviews the Chinese archives and the most recent results in UWB radar both for time domain and frequency domain.
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