Application of Waveform Weighting for a Frequency-Invariant Transmit Beampattern

Faruk Uysal, Zachary Dunn, Rafael Rincon

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)


Advanced radar systems rely on multichannel, wideband operation. NASA's Ecosystem SAR (EcoSAR) and second-generation digital beamforming SAR [1]–[3] use active array architectures, where an active array radar system contains independent transmit and receive chains with unique amplifiers for each antenna element in the multichannel system. These radar systems have an independent arbitrary waveform generator for each channel and are designed to address wideband transmit beamforming. Unlike conventional narrowband beamforming, which only require a unique set of beamsteering coefficients per look angle, wideband beamforming requires beamsteering coefficients that vary with both look angle and frequency.
Original languageEnglish
Pages (from-to)4-12
Number of pages9
JournalIEEE Aerospace and Electronic Systems Magazine
Issue number12
Publication statusPublished - 7 Feb 2017


  • waveform weighting
  • NASA
  • beamsteering coefficient
  • narrowband beamforming
  • wideband transmit beamforming
  • independent arbitrary waveform generator
  • amplifier
  • radar receiver
  • radar transmitter
  • active array radar system
  • multichannel wideband operation


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