针对水下目标方位（Direction of Arrival，DOA）估计准确性实时性的要求，理论分析了互质阵列模型、压缩感知DOA估计的原理，设计实现了基于FPGA的互质阵列压缩感知算法DOA估计系统。首先介绍了系统开发环境，包括平台选择、开发流程等；其次，介绍了硬件系统的整体框架，重点说明了PS与PL之间的数据传递流程和硬件各模块实现过程，并仿真验证了该系统的正确性。在Xilinx FPGA平台上进行了湖试数据的处理，完成了数据运算参数的统计收集，验证了DOA估计的有效性，并计算了运算耗时。结果表明，所设计的系统能够正确完成DOA估计并满足实时性要求。
In order to meet the real-time requirement of the accuracy of underwater target direction of arrival (DOA) estimation, the principle of coprime array model and compressed sensing DOA estimation is theoretically analyzed, and the coprime array compressed sensing algorithm DOA estimation system based on FPGA is designed and implemented. First, the system development environment is introduced, including platform selection, development process, etc; Secondly, the overall framework of the hardware system is introduced, focusing on the data transfer process between PS and PL and the implementation process of each hardware module, and the correctness of the system is verified by simulation. The lake test data was processed on the Xilinx FPGA platform, the statistical collection of data operation parameters was completed, the effectiveness of DOA estimation was verified, and the calculation time was calculated. The results show that the designed system can correctly complete DOA estimation and meet the real-time requirements.
2026,48(4): 114-119 收稿日期：2025-2-26
DOI：10.3404/j.issn.1672-7649.2026.04.017
分类号：U666.7；TN911.7
作者简介：苏杨旭(1999-),男,硕士研究生,研究方向为水下基阵列
参考文献：
[1] 鄢社锋, 马远良. 传感器阵列波束优化设计 [M]. 北京: 科学出版社, 2009.
[2] VAIDYANATHAN P , PAL P . Sparse sensing with coprime arrays[C]//2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, 2010.
[3] 王鸿帧, 郑桂妹, 宋玉伟. 互质阵列DOA估计性能综合分析[J]. 现代雷达, 2022, 44(5): 57-63.
WANG H Z, ZHENG G M, SONG Y W. Comprehensive analysis of DOA estimation performance of coprime array[J]. Modern Radar, 2022, 44(5): 57-63.
[4] QIN S, ZHANG Y D, AMIN M G. Generalized coprime array configurations for direction-of-arrival estimation[J]. IEEE Transactions on Signal Processing, 2015, 63(6): 1377-1390.
[5] CANDÈS E J. Compressive sampling[J]. Proceedings of the International Congress of Mathematicians, Madrid, Spain, 2006, 17(2): 1433–1452.
[6] 周明阳, 郭良浩, 闫超. 改进的贝叶斯压缩感知目标方位估计[J]. 声学学报, 2019, 44(6): 961-969.
ZHOU M Y, GUO L H, YAN C. Improved bayesian compressive sensing-based direction of arrival estimation[J]. Acta Acustica, 2019, 44(6): 961-969.
[7] 康春玉, 李前言, 章新华, 等. 频域单快拍压缩感知目标方位估计和信号恢复方法[J]. 声学学报, 2016, 41(2): 174-180.
KANG C Y, LI QY, ZHANG X H, et al. Direction of arrival estimation and signal recovery based on single snapshot compressed sensing in frequency domain[J]. Acta Acustica, 2016, 41(2): 174-180.
