ABSTRACT
This chapter introduces the basic concepts of ultra-wideband (UWB) radar waveforms and systems. It begins with a discussion of the capabilities afforded by conventional systems which, in turn, motivate the study of UWB waveforms. The chapter continues with more detailed material on fundamental radar principles and a discussion of the current technical issues concerning the use of UWB signals for radar. The common tools of waveform analysis and synthesis such as the Fourier and Laplace transforms carry some implicit assumptions about the nature of the system under consideration. Conventional radar waveform design utilizes a small percent-bandwidth signal in order to take advantage of sinusoidal resonance effects. The coupling between the time- and frequency-domain resolutions is commonplace in conventional waveform design. The usual method for achieving clutter rejection is to isolate the clutter reflections from the target in one or more of the four measurement domains.
