| 张 钧,姜思仪,彭喜元.基于欠采样的载频与二维到达角联合估计方法[J].电子测量与仪器学报,2020,34(4):142-149 |
| 基于欠采样的载频与二维到达角联合估计方法 |
| Joint carrier and 2D-DOA estimation based on sub-nyquist sampling |
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| DOI： |
| 中文关键词: 2D-DOA 联合估计 双 L 型阵列 随机解调 压缩感知 |
| 英文关键词:2D-DOA joint estimation two L-shaped arrays random demodulation compressed sensing |
| 基金项目:国家自然科学基金面上项目(61671177)资助 |
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| 中文摘要: |
| 针对阵列参数估计中传统奈奎斯特采样定理给采样和存储设备带来的巨大压力,提出了一种基于随机解调(RD)阵列
结构的信号载频与二维到达角(2D-DOA)联合估计方法。 利用不同天线阵列之间的互相关矩阵构造协方差矩阵,基于旋转不
变子空间(ESPRIT)方法求解载频和 2D-DOA 参数,同时克服了载频和 2D-DOA 之间的配对问题。 仿真实验结果证明了该方法
能较好地从较少的欠奈奎斯特样本中估计目标信号的载波频率和 2D-DOA,并恢复原信号的时域波形。 |
| 英文摘要: |
| The traditional Nyquist sampling theorem brings a pressure in the sampling and storage devices for array parameter estimation
in radar signal. A joint carrier frequency and two-dimensional direction of arrival (2D-DOA) estimation method are proposed based on
double L shaped array random demodulation ( RD) structure. This method based on the estimating signal parameter via rotational
invariance technique (ESPRIT) decomposition method. The algorithm constructs a cross-correlation matrix between different antennas.
The corresponding pairing method is also provided. Simulation results show that this method can estimate the carrier frequency and
2D-DOA of the target signal from the sub-Nyquist samples, and reconstruct the time domain waveform of the original signal. |
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