ADAPTIVE FRAGMENTATION AND FREQUENCY TRANSLATION OF CONTINUOUS SPECTRUM WAVEFORM TO MAKE USE OF DISCONTINUOUS UNOCCUPIED SEGMENTS OF SPECTRAL REGIONS

摘要

Identity transform filters (such as sin(x)/x filters) are used to coherently fragment the frequency continuum of a wideband waveform, such as an ultra wideband radar signal, into a plurality of spectral segments that are capable of fitting into unoccupied spectral regions of a partially occupied electromagnetic spectrum. The wideband waveform has a bandwidth that falls within the partially occupied portion of the unoccupied spectral region. The total useable bandwidth of the unoccupied spectral region. The total useable bandwidth of the unoccupied regions is at least equal to that of the wideband waveform.