一个高强度的合成数组算法,使用单个移动向量水电话
Rongxin Zhu1, Chao Wang1, Qi Zhang1
1Naval Submarine Academy, Qingdao 266199, China.
The Journal of the Acoustical Society of America
|November 4, 2025
概括
本研究引入了一种新的算法,用于非合作信号的到达方向 (DOA) 估计. 不相干的常规光束成形-相干最小方差无扭曲响应 (ICBF-CMVDR) 算法在具有挑战性的声环境中提高了稳定性和准确性.
科学领域:
- 声学信号处理 声学信号处理
- 阵列信号处理系统的信号处理.
- 水下声学 水下声学
背景情况:
- 工程中的非合作信号缺乏分析模型.
- 现有的合成阵列方法与信号模糊性作斗争.
- 传统的梁成型技术在强度和定向精度方面存在局限性.
研究的目的:
- 为了解决模拟非合作信号的局限性.
- 为了提高梁成型中的强度和定向精度.
- 开发一种用于增强到达方向 (DOA) 估计的新型算法.
主要方法:
- 利用福里埃变换属性来实现虚拟数组元素的频域时间对齐.
- 提出了不连贯的常规光束成形-连贯的最小偏差无扭曲响应 (ICBF-CMVDR) 算法.
- 使用模拟和海上试验数据进行验证.
主要成果:
- ICBF-CMVDR算法实现了卓越的定向性和增强的稳定性.
- 模拟显示DOA估计误差只有3°在-20dB SNR.
- 有效的DOA估计延伸到-24dB SNR,这是一个显著的改进.
- 与现有的方法相比,海上试验表明,有效的DOA估计持续时间超过100秒.
结论:
- 拟议的ICBF-CMVDR算法为DOA估计提供了卓越的性能.
- 该方法有效地克服了传统梁成型技术的局限性.
- 这一进步对水下无人驾驶车辆应用和声信号处理有重大影响.
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