Instantaneous ultra-wideband sensing using frequency-domain channelization

DWPI Title: Matched-filtering method of channelized signal, involves applying first partial matched filter and second partial matched filter, and outputting response signal based upon matched-filtered first and second channel signals
Abstract: A radar system wherein a radar return is channelized by frequency into a plurality of channels, and each of the channels is sampled by a respective analog-to-digital converter that has a sampling rate less than the Nyquist rate of the radar return. The digitally sampled channel signals are Fourier transformed into the frequency domain, where each of the frequency-domain channel signals is matched-filtered according to a respective partial matched filter. The channel signals are then transformed back to the time domain, whereupon they are added together to generate the impulse response of the radar system responsive to the radar return.
Use: Matched-filtering method of channelized signal.
Advantage: Ensures that every frequency present in the bandwidth of the input signal is represented in at least one of the channel signals since channels are filtered such that each of the channel signals comprises frequencies that are present in at least one other of the channel signals.
Novelty: The matched-filtering method involves applying a first partial matched filter to the first channel signal (306), applying a second partial matched filter to the second channel signal (308), and outputting a response signal based upon the matched-filtered first channel signal and the matched-filtered second channel signal, the response signal indicative of a target in the scene.
Filed: 7/2/2018
Application Number: US16025843A
Tech ID: SD 14542.0
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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