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本文提出一种测向应用的新的简单的估值算法,它把传统的纯相位干涉仪加以扩展以便将来自天线阵列的校正相位与幅度响应数据都用进来.通过用天线增益对基线相位差的平方适当加权予以实现.幅度数据的加入通常只以不大的计算复杂性获得比纯相位干涉仪很大的性能提高,况且这种性能的提高会随着附加噪声的增大和天线阵列响应偏离理想几何阵列响应的偏差的增大而更好.因而这种新的估值算法能较好地在纯相位干涉仪和最大似然估计(MLE)之间折衷,但最大似然估计以很大的计算量为代价才能获得近似最佳性能.通过简便的计算分析了足够高信噪比(SNR)时的性能结果,并用数字电磁代码(NER)模拟的天线阵响应加以论证,模拟结果确证了该理论分析,并清楚地表明,用这种新的估值算法能大大减小到达角(DOA)估值误差的方差.
In this paper, we propose a new simple estimation algorithm for DF applications, which extends the traditional pure phase interferometer to use both the corrected phase and amplitude response data from the antenna array. By using the antenna gain versus baseline phase difference The square of the appropriate weight to be achieved.Addition of amplitude data is usually obtained with only a small computational complexity than the pure phase interferometer greatly improved performance Moreover, this performance increase will increase with the additional noise and the antenna array response deviation The better the variation of the response of the ideal geometrical array is and the better this new estimation algorithm can trade off between the pure phase interferometer and the maximum likelihood estimation (MLE), but the maximum likelihood estimation is very large To obtain the approximate best performance at the expense of the computational cost.Analyzing the performance results at a sufficiently high signal-to-noise ratio (SNR) with a simple calculation and demonstrating the antenna array response simulated by the digital electromagnetic code (NER) This theoretical analysis clearly shows that the variances of the DOA estimation errors can be greatly reduced with this new estimation algorithm.