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首页> 外文会议>Fifth International Conference on Electronic Measurement amp; Instruments (ICEMI'2001) Vol.1 Nov 18-21, 2001 Guilin, China >Interference Direction-of-Arrival Estimation under Severe Environment
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Interference Direction-of-Arrival Estimation under Severe Environment

机译：恶劣环境下干扰到达方向的估计

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摘要

Direction-of-arrival (DOA) estimation of multiple signals is a well-studied problem in spatial signal processing. "Traditional" methods exploit knowledge of the array manifold or its structure without using information on the signals. The constant modulus algorithm (CMA) is shown quite important for blind beamforming. However, when the co-channel interference signals are stronger than the desired signal, their convergence becomes unbearable. In this paper, we proposed a novel method to determine the DOA of the multiple interference signals obtained from the weight vector based on the CMA under severe environment. Formulations in theory and simulation results confirm its accuracy and efficiency. Moreover, only one snapshot and a few samples are needed. With the known DOA of the desired signals, a satisfactory beam pattern can be formed immediately.
机译：多个信号的到达方向（DOA）估计是在空间信号处理中经过充分研究的问题。 “传统”方法在不使用信号信息的情况下利用了阵列流形或其结构的知识。恒定模量算法（CMA）对于盲波束成形非常重要。但是，当同频道干扰信号强于所需信号时，它们的会聚变得难以忍受。在本文中，我们提出了一种在恶劣环境下基于CMA确定权重向量获得的多个干扰信号的DOA的新方法。理论公式和模拟结果证实了其准确性和效率。此外，仅需要一个快照和几个样本。利用所需信号的已知DOA，可以立即形成令人满意的光束方向图。

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