Detection performance of time-hopping ultra-wideband LPI waveforms

Low probability of intercept (LPI) performance of a time-hopping (TH) ultra-wideband (UWB) system is investigated. The detection probability with the use of one single detector to detect the presence of TH UWB signals is derived. Another detection method, which uses multiple energy detectors, is also analyzed considering both chip and frame asynchronization and the time shift in the pulse position modulation (PPM). These two methods, one with single detector and the other with multiple detectors, are compared in terms of the detection probabilities