海底深度 meaning in English
seabed depth
Examples
- It is a comparatively simple step from locating the sea bottom to locating a shoal of fish .
从测量海底深度到探测海底鱼群只是较为简易的一步。 - So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish
因此，从测定海底深度到测定鱼群的位置这一进展相对较易。 - Under these fimctions , mismatch of ocean depth , receiver location and sound speed profile have been simulated respectively
文中运用该函数分别对海底深度、接收基阵位置和声速分布三种失配情况进行计算机模拟研究。 - The software adopts eofs to describe the sound speed profile in the sea , and takes its bottom depth parameters from inputed digital chart . the software can process more complex 3 - dimension sound field
软件中采用经验正交函数来描述海洋中的声速剖面，海底深度参数以数字海图的形式输入，可以处理较复杂的三维情况下的海洋环境声场。 - Different results specify that the first kind of cost function is sensitive to the mismatch of ocean depth and receiver location , but is insensitive to sound speed profile ' s % $ jai8x9 @ t $ m & z mismatch and has high accuracy of depth localizaion ; the second kind of cost fimction is insensitive to all three kinds of mismatch , but its resolution of depth is very low ln order to overcome the cost function ' s sensitivity to mismatch , improvemedt of the accuracy of time delay estimation and model calculation may be adopted , when both conditions are reached , the sensitivity wiil be greatly reduced and the resolution of range and depth will be improved at the same time
仿真结果表明，第一类代价函数对海底深度和基阵倾斜失配是敏感的，对声速失配却不敏感，并且能够获得较高的深度定位精度；第二类代价函数对三种失配都不敏感，只是深度分辨率较低。为了克服代价函数对失配的敏感性，可采用提高时延估计精度和模型计算精度的方法。当两个条件满足时，敏感性得到极大的抑制并获得了较高的距离和深度估计精度。