干涉谱法测量水下竖直运动目标轨迹  

Measurement of underwater vertical moving target using interference spectrum

作　　者：江磊[1] 惠俊英[1] 蔡平[1] 杨娟[1] 

机构地区：[1]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001

出　　处：《海洋工程》2006年第4期38-42,共5页The Ocean Engineering

摘　　要：以被动测量竖直运动目标轨迹为目的,通过分析多途信号声压场模型,讨论了经过相干多途信道的目标辐射噪声在接收点产生相干干涉的现象。在目标水平距离已知的情形下,给出了干涉频率周期与目标深度的关系,提出了利用多途信道的相干干涉信息来解算目标深度轨迹的方法。时频分析可以得到干涉条纹、条纹粗细变化的规律与目标深度变化有关。通过对实测数据的分析,说明本方法的有效性。Depending on the analysis of a multi-path acoustic field model, the interference phenomenon that the noise radiated by target across the multi-path acoustic channel interfered at the receiver is discussed. On the condition that the horizontal distance is known, the relationship between the interference frequency period and the target depth is given. A new depth estimation method is presented using interference information of the multi-path channel. The interference pattern can be shown through the time and frequency analysis, and the width varies with target depth. The real data are analyzed in comparison with the simulation data, and the result proves its validity.

关 键 词：干涉现象 被动目标 轨迹测量 

分 类 号：TB565.1[交通运输工程—水声工程]