用于宽带DSP基于多束真实时间延迟射频传感应用的蒂兰波器
Sirani M Perera1, Gayani Rathnasekara2, Arjuna Madanayake2
1Department of Mathematics, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA.
Sensors (Basel, Switzerland)
|January 23, 2024
概括
本研究介绍了一种新的数字算法,用于使用分数延迟的射频 (RF) 传感. 它可以同时提供多个RF光束,降低电路复杂性,用于先进的传感应用.
科学领域:
- 电气工程 电气工程
- 信号处理 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) 估计对于射频 (RF) 传感,通信和成像至关重要.
- 现有的宽带光束成形系统往往需要高过器订单,增加电路复杂性.
- 蒂兰分数延迟波器在可用的带宽和电路复杂性之间提供了一个权衡.
研究的目的:
- 为宽带真实时间延迟数字延迟范德蒙德矩阵 (DVM) 分因式引入一种新的算法.
- 为了利用Thiran的分数延迟实现多个DOA支持的射频传感器.
- 为了减少多束数字宽带光束成形系统中的电路复杂性.
主要方法:
- 开发使用稀疏矩阵分解的数字DVM算法.
- 实施Thiran分数延迟用于近似真实时间延迟.
- 在Xilinx FPGA RF-SoC上评估Thiran过器的分数采样周期和第3和第4顺序.
主要成果:
- 拟议的算法可实现多个同时射频束,这对于低复杂度传感至关重要.
- 提兰波器表现出有利的相位和群体延迟反应,特别是在时间过量采样因子为3的情况下.
- 初步的FPGA结果显示了使用应用特定集成电路 (ASIC) 技术实现DVM因子化的潜力.
结论:
- 开发的数字DVM算法与Thiran分数延迟为多束射频传感提供了低复杂性的解决方案.
- 提兰过器提供了一种有效的方法,可以实现宽带光束成型,降低硬件要求.
- 这些发现为有效实施先进的射频传感和DOA估计系统铺平了道路.
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