A method for reducing interference, comprising receiving a
wideband signal, having at least one large amplitude component; adaptively modifying the
wideband signal with respect to at least one
high intensity component without substantial introduction of non-linear
distortion, while reducing a residual
dynamic range thereof; digitizing the modified
wideband signal to capture information describing at least the
high intensity signal at a sampling rate sufficient to extract modulated information present within the
wideband signal at an upper limit of the band. The
system analyzes a spectral characteristic of the
wideband signal; and extracts
adaptation parameters for the adaptive filtering. The
system therefore provides both large net
dynamic range and wideband operation. Preferably, the digitizer and filter, and part of the spectral characteristic analyzer is implemented in using superconducting circuit technology, with, for example low temperature superconducting
digital signal processing components, and
high temperature superconducting analog filtering components.