一个L形的三层和单个常见元素的Sparse传感器阵列用于2-D DOA估计
Bo Du1,2, Weijia Cui1, Bin Ba1
1Institute of Information Engineering, PLA Strategic Support Force Information Engineering University, Zhengzhou 450001, China.
Sensors (Basel, Switzerland)
|July 29, 2023
概括
这项研究引入了一种新的L形稀疏传感器阵列,用于改进到达方向 (DOA) 估计. 新设计提供了更高的自由度和增强的阵列光圈,以获得更准确的二维DOA结果.
科学领域:
- 信号处理 信号处理
- 阵列信号处理 阵列信号处理
- 电磁学 电磁学 电磁学 电磁学
背景情况:
- 到达方向 (DOA) 估计在各种应用中至关重要.
- 稀疏阵列结构对于高效的DOA估计至关重要.
- 改善稀疏数组的自由度 (DOF) 是一个关键的研究挑战.
研究的目的:
- 提出一种新的L形稀疏传感器阵列,用于增强2D DOA估计.
- 与现有的稀疏阵列设计相比,实现更高的自由度.
- 为了提高青度和高度角度估计的准确性和性能.
主要方法:
- 使用两组三级和单元稀疏数组 (TSESAs) 设计一个新的L形稀疏数组.
- 使用一维 (1-D) 空间光谱搜索来估计向和高度角.
- 采用TSESA数组之间的交叉共变性来实现准确的角度匹配.
主要成果:
- 拟议的L形TSESA实现了更高的自由度 (高达4Q1Q2+8Q1-5).
- 与传统的稀疏数组相比,显示出更大的数组光圈.
- 实现了提高二维 (2-D) DOA估计准确度.
结论:
- 新的L形TSESA在2D DOA估计中提供了卓越的性能.
- 该设计为未来研究稀疏阵列信号处理提供了有前途的方向.
- 模拟结果验证了拟议的阵列的有效性和优势.
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