Interference mitigation via phase only transmit nulling: Preliminary experimental results

T. Higgins, T. Webster, A. Shackelford
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引用次数: 0

Abstract

The increasingly crowded RF spectrum necessitates development of techniques that foster coexistence between multiple RF users. Radar systems can typically mitigate received interference using sidelobe cancellation and adaptive beamforming. In the future, radar systems could possibly use similar techniques to produce nulls in the transmit beampattern further reducing RF fratricide. However, transmit nulling is difficult due to the constant modulus constraint associated with the waveforms transmitted by high power radar systems. Several algorithms have been developed that attempt to determine phase only (PO) weights capable of inducing a transmit null. In this talk, the re-iterative uniform weight optimization (RUWO) algorithm is used as a means to produce PO weights from a measured interference covariance matrix.
仅通过相位传输消除干扰:初步实验结果
日益拥挤的射频频谱要求开发能够促进多个射频用户共存的技术。雷达系统通常可以使用旁瓣对消和自适应波束形成来减轻接收到的干扰。在未来,雷达系统可能会使用类似的技术,在发射波束模式中产生零,进一步减少射频自相残杀。然而,由于高功率雷达系统发射的波形具有恒定模量的约束,使得发射零化变得困难。已经开发了几种算法,试图确定能够诱导传输null的相位(PO)权重。在本次演讲中,使用了重复迭代均匀权优化(RUWO)算法作为从测量的干涉协方差矩阵产生PO权的手段。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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