Application of Waveform Weighting for a Frequency-Invariant Transmit Beampattern

Faruk Uysal; Zachary Dunn; Rafael Rincon

doi:10.1109/MAES.2016.150201

Application of Waveform Weighting for a Frequency-Invariant Transmit Beampattern

Faruk Uysal, Zachary Dunn, Rafael Rincon

Microwave Sensing, Signals & Systems

Research output: Contribution to journal › Article › Scientific › peer-review

4 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	4-12
Number of pages	9
Journal	IEEE Aerospace and Electronic Systems Magazine
Volume	31
Issue number	12
DOIs	https://doi.org/10.1109/MAES.2016.150201
Publication status	Published - 7 Feb 2017

Keywords

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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10.1109/MAES.2016.150201

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abstract = "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.",

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Application of Waveform Weighting for a Frequency-Invariant Transmit Beampattern

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