IQ不平衡和DC偏置对脉冲捷变雷达处理的影响

2020 IEEE International Radar Conference (RADAR) Pub Date : 2020-04-01 DOI:10.1109/RADAR42522.2020.9114629

J. Metcalf, Shane Flandermeyer, Charles A. Mohr, Andrew M. Kordik, Patrick M. McCormick, Cenk Sahin

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引用次数: 1

摘要

商用现货(COTS)软件定义雷达(sdr)的出现实现了低成本、灵活的实验，采用新兴的脉冲敏捷波形设计，以缓解频谱拥塞，提高雷达性能，嵌入式通信和其他应用。我们研究了IQ不平衡和直流偏置形式的直接数字下变频采样缺陷对脉冲敏捷波形的影响。针对一种特殊的雷达嵌入式通信波形，给出了一个通用框架和实例。结果表明，在脉冲敏捷框架下，IQ不平衡导致的杂波响应显著增加。

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Characterizing the Impact of IQ Imbalance and DC Bias on Pulse-Agile Radar Processing

The advent of commercial-off-the-shelf (COTS) software-defined radars (SDRs) has enabled low-cost, flexible experimentation with emerging pulse-agile waveform designs to mitigate spectral congestion, improve radar performance, embed communications, and other applications. We examine the impact of direct digital downconversion sampling imperfections in the form of IQ imbalance and DC bias on pulse-agile waveforms. A general framework is developed and examples given for a particular radar-embedded communication waveform. It is shown that the clutter response due to IQ imbalance is significantly increased in a pulse agile framework.

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2020 IEEE International Radar Conference (RADAR)

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