反馈路径中带有限制器的自适应阵列初步结果

MILCOM 1982 - IEEE Military Communications Conference - Progress in Spread Spectrum Communications Pub Date : 1982-10-01 DOI:10.1109/MILCOM.1982.4805992

E. Ha, D. Chang, B. Forman

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引用次数: 0

摘要

休斯实验多单元自适应阵列天线系统是基于Widrow LMS算法的混合实现。微型计算机对模拟相关器输出进行采样，然后计算新的天线权重设置，并相应地更新正交加权电路。放置在反馈路径中的硬限制器可防止被最强干扰永久捕获。这种配置似乎规避了对多重干扰进行归零的困难。实验室结果表明，在几百次迭代中，干扰器的抵消高达60 dB。对于12%带宽的干扰器，系统性能下降到约30 dB的抑制。

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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Adaptive Array with Limiter in Feedback Path Preliminary Results

The Hughes experimental multiple-element adaptive array antenna system is based on a hybrid implementation of Widrow's LMS algorithm. A microcomputer samples the analog correlator outputs, then computes the new antenna weight settings and updates the quadrature weighting circuitries accordingly. A hard limiter placed in the feedback path prevents permanent capture by the strongest interference. This configuration appears to circumvent the difficulty in nulling against multiple interferences. Laboratory results demonstrate up to 60 dB cancellation of jammers in a few hundred iterations. System performance degrades to about 30 dB suppression for a 12 percent bandwidth jammer.

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MILCOM 1982 - IEEE Military Communications Conference - Progress in Spread Spectrum Communications

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