Furthermore, on the basis of it, a method to choose the appropriate range of wave striking angles for avoiding the disturbance of colored noise induced by wave resultant force on modal identification is proposed corresponding to each lower-frequency mode.
为了提高不规则波载荷下海洋平台的模态识别精度,通过分析波浪传播方向上的桩腿间距对平台波浪合力频率特性的影响规律,针对4桩腿导管架平台提出了一种寻找波浪合力峰频与谷频的方法,并在该方法的基础上针对各个低阶模态识别提出了选择合适的波浪入射角范围来避免波浪合力有色噪声干扰的方法。
Based on refraction p-wave, and the concept of single-emission and double-receiving, forward modeling was used to obtain the acoustic travel time.
采用折射纵波单发双收的原理,数值正演模拟得到了声波时差值;利用小波变换计算了地层位置、厚度和速度。