SIGNAL RECOVERY AND DETECTION OF CERTAIN WIDEBAND SIGNALS USING MULTIPLE LOW-RATE ADCS
Johnson, Michael A.
Jenn, David C.
MetadataShow full item record
There are certain wideband signals that occupy quite large bandwidths but may have dominant amplitudes in certain frequency bands. In this work, we show that these signals can be effectively sampled by a lower sampling rate compared to what is required by the Nyquist-Shannon sampling theorem. These resonant frequency components are split into separate receiver paths (subchains or channels) and sampled at a much lower sampling rate than is required for the entire wideband signal. It is shown that reconstruction of the signal is improved, and the probability of detection performance experiences little or no degradation since the effective noise power is attenuated by the proposed method.
Approved for public release. distribution is unlimited
Showing items related by title, author, creator and subject.
Lima, Antonio F. (Monterey California. Naval Postgraduate School, 2002-09);LPI radar is a class of radar systems possessing certain performance characteristics that make them nearly undetectable by today's digital intercept receivers. This presents a significant tactical problem in the battle ...
Quantifying the differences in low probability of intercept radar waveforms using quadrature mirror filtering Jarpa, Pedro F. (Monterey, California. Naval Postgraduate School, 2002-09);Low Probability of Intercept (LPI) radars are a class of radar systems that possess certain performance characteristics causing them to be nearly undetectable by most modern digital intercept receivers. Consequently, LPI ...
The systems engineering design of a smart Forward Operating Base surveillance system for forward operating base protection Craft, Timothy L. (Monterey, California: Naval Postgraduate School, 2013-06);Forward operating bases are vulnerable to terrorist activity due to their location and limited resources. Threat awareness under these conditions is paramount to the safety of the personnel and to mission accomplishment. ...