Classifying five target signals underwater base on the bispectrum features through BP neural networks, the targets are identified properly with high efficiently.
在提取了水下目标信号的双谱特征的基础上，利用BP神经网络对五类水下目标信号的双谱特征进行分类，得到了较高的识别率。
To establish a secure link while remaining 100 metres underwater, submarines could transmit photons of laser light to satellites, for retransmission to base.
当潜艇地100米海底时，要建立安全的通信链路，把光子激光发射到卫星上去，再由卫星转发回基地。
Acoustic similarity is the base of scaled model tests of underwater structure noise.
声学相似性是水下结构噪声模型试验的基础。
The experience of underwater blocking construction of deep river swell with big sand bags at Longxue Ship-Building Base in Nansha is presented.
介绍南沙龙穴造船基地深水河涌水下大砂袋封截的施工经验。
Also, the system composing of phased array ultrasonic imaging and its key technique are given, which set base for underwater ultrasonic imaging in theory.
还提出了相控阵超声成像的系统构成以及其中应用的关键技术指标，为水下超声成像的研究奠定了理论基础。
Offshore instruments near the American base listen out for the underwater sound of such blasts.
靠近美国基地的近海岸仪器则等待着水下类似的爆炸发出的声音。
It was proved that the method was feasible by experiments. It provided a steady base in theory and technology for engineering design of underwater small arms.
实验表明，该分析方法可行，为水下轻武器的工程化设计奠定了坚实的理论基础和技术支撑。
The study on the characteristics of scattering from an underwater target is only the base that the active sonar works on but also the source which new ideas, new theories and new methods come from.
水下目标声散射特性研究是主动声纳赖以工作的基础，也是主动探测产生新思想、新原理、新方法的基础。
In pool tests so far, it has successfully located and approached a target consisting of a 7 cm (2.8 inch) -wide ring, intended to simulate an underwater recharging base for the vehicle.
在池试验？，到目前为止，它已成功地找到并且接近组成的7厘米(2.8英寸)-宽环靶，目的是模拟水下充电基座的车辆。
In pool tests so far, it has successfully located and approached a target consisting of a 7 cm (2.8 inch) -wide ring, intended to simulate an underwater recharging base for the vehicle.
在池试验？，到目前为止，它已成功地找到并且接近组成的7厘米(2.8英寸)-宽环靶，目的是模拟水下充电基座的车辆。
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