摘要
为进一步提高拖曳线列阵水下工作性能,分析了高海况下拖船的运动规律,提出一种拖曳线列阵阵形扰动模型。该模型首先应用ITTC单参数标准海浪谱对随机海浪作用下的船舶线性横摇运动进行建模,然后根据应力波理论建立拖曳线列阵正弦随机扰动模型,同时分析研究了阵形扰动下阵元接收信号特性,为阵形扰动影响下波束形成和线列阵功率谱的校正等打下基础。
To further improve towed linear array＇s performance underwater,the movement of tugs under harsh sea conditions is analyzed and the sine random distortion model of towed line array is proposed.ITTC single-parameter standard wave spectrum is applied to modeling ship＇s linear rolling movments under stochastic waves.Then,the sine random distortion pattern is established based on stress wave theory,and array signal characteristics are analyzed.Both of these make a basis for beamforming and power spectrum correction of the towed line array with shape distortion.
出处
《舰船电子工程》
2016年第4期146-150,共5页
Ship Electronic Engineering
关键词
船舶横摇
正弦随机扰动
阵元时延
阵元信号特性
rolling movements
sine random distortion
time delay
array signal characteristics
