ABSTRACT
Narrowband receiver technology and performance prediction analysis is well established and quantified, and ultrawideband (UWB) receiver theory and performance prediction will be an extension of known receiver concepts. The UWB radar’s potential to pick up target information as well as presence may add a system function of detecting and evaluating target return information. The UWB radar receiver designer’s challenge will be to extend the traditional narrowband analytical tools with new information about the frequency statistics of both noise and signal and detection criteria. Narrowband radar signal reception and detection is a mature, well-understood, and quantified process. The energy in a 1- or 10-ns UWB radar pulse represents a transient of duration between 1/100th or 1/1000th of the filter’s response time. Diffraction effects on radar and communications signals are well documented. Diffraction is a frequency-dependent phenomena; however, it has little effect at microwave frequencies and is generally ignored in microwave radar designs.
