摘要
随着舰船噪声抑制技术的提高,利用水声远程定位舰船目标变得越来越困难.而舰船地震波能量主要集中在固体和液体的分界表面,在海底衰减缓慢,可以远程传播.利用舰船地震波实现对目标的远程定位可以弥补水声远程定位的不足.本文分析了舰船地震波的传输耦合机理,研究了基于九元海底地震计环形阵列的梯度下降算法和单纯形算法对目标的定位.仿真计算证明,梯度下降算法和单纯形算法可以减小定位误差,单纯形算法具有更高的定位精度和稳定性.
With the improvement of the ship noise suppression technology,locating remote ship target using underwater acoustic wave becomes more and more difficult.However,the energy of the seismic waves generated by a ship is mainly concentrated on the boundary between solid and liquid surfaces,and it can propagate long distance since its attenuation is slow on the seabed.As a result,using seismic wave to realize the positioning of remote target could compensate for the shortcomings of underwater acoustic positioning.In this paper,the transmission coupling mechanism of ship seismic waves was analyzed.Then,the gradient descent algorithm and the simplex algorithm,both of which were based on the nine-element seabed seismometer ring array,were used to locate the target.The simulation demonstrated that both the gradient descent algorithm and the simplex algorithm could reduce the positioning error.Furthermore,the simplex algorithm had higher positioning accuracy and stability.
作者
薛泽利
张晓峻
侯金弟
孙晶华
XUE Ze-li;ZHANG Xiao-jun;HOU Jin-di;SUN Jing-hua(College of Science,Jiamusi University,Jiamusi 154007,China;College of Physics and Optoelectronic Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《物理实验》
2019年第11期1-7,共7页
Physics Experimentation
基金
国家自然科学基金面上项目(No.61675054)
关键词
舰船地震波
定位阵列
梯度下降算法
单纯形算法
ship seismic wave
positioning array
gradient descent algorithm
simplex algorithm
