论文标题
通过非均匀时期调制，用TMLA进行多个窄带信号方向查找
Multiple Narrow-band signals Direction Finding with TMLA by Nonuniform Period Modulation
论文作者
论文摘要
提出了一种新的阵列信号重建和信号通道DOA估计方法，基于TMLA，通过不均匀时期调制。通过使用非均匀的周期调制，可以分开由不同元素产生的谐波分量。因此，可以通过分析组合信号的频谱来重建常规快照。然后，使用空间频谱估计方法来实现DOA估计。提供数值模拟以验证所提出方法的可行性和准确性。由于单个时间内处理的频域分析中信号的持续时间非常短，因此此方法也适用于窄带信号。另一个亮点是，该方法可以同时测量入射信号元素-1角的数量。
A new array signal reconstruction and signal-channel DOA estimation method based on TMLA by nonuniform period modulation are proposed. By using non-uniform period modulation, the harmonic component produced by different elements could be separated. Therefore, the conventional snapshot could be reconstructed by analyzing the spectrum of the combined signal. Then spatial spectrum estimation method is used to implement DOA estimation. Numerical simulations are provided to verify the feasibility and accuracy of the proposed method. Since the duration of the signal in the frequency domain analysis processed in a single time is very short, this method is also applicable to narrowband signals. Another highlight is that this method can simultaneously measure the number of the elements-1 angle of incident signals.
