Wideband Beamformer System
AssigneeLeidos, Inc.
InventorsLeo James Corbalis, David Scott Illar
Life of this patent
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Abstract
An adaptive phased-array processing solution, referred to as the Wideband Beamformer System (WBS), demonstrates an improvement in the range and quality of air link surveillance downlink wireless cell radio signals. The WBS applies wideband frequency-domain adaptive beamforming to preprocess the dense RF signal environment, minimizing co-channel interference (CCI) from each signal, and then reconstructing a “clean” version of the signal for input to the existing surveillance receiver(s).
Claims11
A system for improving the quality of reception of multiple overlapping radio frequency input signals emitted from multiple transmitters comprising:
- at least one subband adaptive filter including,
- multiple channelizers for decomposing the multiple overlapping radio frequency input signals into individual channel signals,
- a buffer for extracting individual channel signal data,
- an adaptive beamformer filter module,
- multiple subband beamformer combiners,
- multiple synthesizers;
- and
- a weighting algorithm module, wherein the weighting algorithm module receives the individual channel signal data from the buffer and provides individualized weighted filter data to the adaptive beamformer filter module responsive thereto;
- and
- further wherein the adaptive beamformer filter module provides the individualized weighted filter data to the multiple subband beamformer combiners for application to the individual channel signals.
A system for improving the quality of reception of multiple overlapping radio frequency input signals emitted from multiple transmitters comprising:
- an antenna array for receiving the multiple overlapping wideband radio frequency input signals emitted from multiple transmitters and outputting multiple tuned input signals to at least one adaptive filter;
- at least one adaptive filter including an adaptive beamformer filter module and a weighting algorithm module, wherein the at least one adaptive filter receives the multiple tuned input signals from the antenna array and applies individualized weighted filter data generated by the weighting algorithm module to a subset of the multiple tuned input signals;
- and
- further wherein the individually filtered multiple tuned input signals are outputted to one or more receivers.
Dependencies are inferred from the claim text.