运动小孔径水平基阵估计目标深度

来源 :声学学报 | 被引量 : 0次 | 上传用户：jerry_ic

【摘要】

：

针对浅海动态声场,基于简正波模型提出了一种利用运动小孔径水平基阵估计目标深度的方法.通过合成孔径算法将运动小孔径水平基阵扩展成虚拟的大孔径水平基阵,利用稀疏近似最小方差准则可以在相对较小的合成孔径上估计各阶简正波模态能量,不同深度的模态匹配度由Camberra距离的负指数度量,目标深度估计结果是模态匹配度最大值对应深度.数值仿真与实验结果表明,在简正波声场结构基础上,声源频率越低则实现目标深度估计需要的合成孔径距离越小,当声源与阵列端射方向成一定角度时,对所需合成孔径的影响与其相对速度变化时的影响相同,在

【作者】

：

李天宇李宇黄海宁杨习山

【机构】

：

中国科学院声学研究所北京 100190;中国科学院先进水下信息技术重点实验室北京 100190;中国科学院大学北京 100049;中国科学院声学研究所北京 100190;中国科学院先进水下信息

【出处】

：

声学学报

【发表日期】

：

2021年4期

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运动小孔径水平基阵估计目标深度

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