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16 May 2005 Transform domain communication system as an ultra-wideband radar
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Traditionally, ultra-wideband radars increase bandwidth by using shorter pulses. However, by decreasing the pulse width, the power on target decreases and radar detection probabilities decrease. Therefore, new approaches to increase bandwidth are needed that still have adequate power on target. One radical new approach is to use a Transform Domain Communication System (TDCS) as an ultra-wideband radar. The primary advantage of this technique is that it has properties similar to Gaussian noise meaning that the radar would improve bandwidth similar to pseudo-noise (PN) sequences. Also, based on the number of carriers used to generate the TDCS code, multiple pulses can be made mutually orthogonal. This orthogonality can be exploited to effectively increase the maximum unambiguous range for pulse-Doppler radars up to the range of the horizon. In essence, TDCS radar possesses a high pulse repetition frequency (PRF) for velocity estimation and large unambiguous range.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Abel S. Nunez and James T. Caldwell "Transform domain communication system as an ultra-wideband radar", Proc. SPIE 5788, Radar Sensor Technology IX, (16 May 2005);

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