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Multifunction Radio Frequency Photonic Array With Beam-Space Down-Converting Receiver | IEEE Journals & Magazine | IEEE Xplore

Multifunction Radio Frequency Photonic Array With Beam-Space Down-Converting Receiver


Abstract:

A multifunction photonic beam-space array processor is shown to generate the beam space of an X-band array. Subsequent down-conversion of desired beams is performed via i...Show More

Abstract:

A multifunction photonic beam-space array processor is shown to generate the beam space of an X-band array. Subsequent down-conversion of desired beams is performed via introduction of an optical local oscillator and high-speed photodetectors at the processor output. A separate optical path is used to “image” the full field of view of the input array for real-time angle-of-arrival estimation. Finally, experimental results showing simultaneous processing of output beams for a radar waveform and an in-band communications signal are presented. The recovery of a 10-MHz bandwidth, quaternary phase-shift keying communications signal with a nominal error vector magnitude of 15.5% is performed via a vector signal analyzer, whereas a custom digital beam-space beam-forming processor is shown to process the same beam data to recover a 100-MHz chirp radar waveform while simultaneously canceling the in-band communications signal by approximately 20 dB via an adaptive spatial null.
Published in: IEEE Transactions on Aerospace and Electronic Systems ( Volume: 54, Issue: 6, December 2018)
Page(s): 2746 - 2761
Date of Publication: 23 April 2018

ISSN Information:


References

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