Use of symmetrical number systems in electronic warfare
Tedesso, Thomas W.
Pace, Phillip E.
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The use of symmetrical number systems and wideband technologies is investigated to develop novel concepts for use in electronic warfare (EW) receivers. A computationally efficient algorithm for determining the dynamic range of the robust symmetrical number system (RSNS) is used to derive additional closed-form expressions for the RSNS dynamic range, using a curvefitting method. A photonic direction-finding array employing dual-electrode Mac-Zehnder modulators with RSNS preprocessing is developed and validated through simulations and experimental testing. Additional EW receiver concepts using the symmetrical number system (SNS) and CS are also examined. An SNS-CS cueing receiver is proposed that places a multichannel undersampling receiver, based on the SNS, into a CS framework and applies CS recovery algorithms to resolve the signal’s frequency components. The SNS-CS cueing receiver’s performance is evaluated through Monte Carlo simulations. The final concept examined is a multichannel Nyquist folding receiver (NYFR) with SNS-based uniform sampling rates (NYFR-B). The NYFR-B’s performance is evaluated through Monte Carlo simulations and performance curves are presented.
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