声纳

Therefore, in February 1963, the decision was made to develop a longer-range missile, while work on new, long range sonars was underway.

因此，在1963年2月，决定发展一型新的远程导弹，同时研制新型远程声纳。

Some methods to restrain reverberation are developed. Three scattering models(bottom scattering, surface scattering and volume scattering model) in bistatic sonars are developed and simulated.

重点研究了双基地声纳的各种散射模型(海底散射模型、海面散射模型、体积散射模型)，通过对各种影响因素的分析，给出了各种模型的明确表达式，并对模型进行了仿真分析。

Baesd on the theory that moving target detectability can be enhanced by joint space-time processing with the application of frequency features and targets' characteristics, we focus our attention on particularies of sonars' target detection using underwater acoustic techniques and vehicle detection using computer vision tec

本文注重在理论指导下的特殊性研究，即在联合利用时间信息、空间信息、频率信息以及目标特征能够提高运动目标检测能力的思想指导下，分别研究了声纳的运动目标检测和基于计算机视觉的交通车辆检测。

Built by Mumbai-based Mazagon Docks Ltd. at a cost of more than ＄500 million, INS Shivalik has advanced radars, antisubmarine sonars, and arms, including Russian Klub surface-to-surface missiles and Israeli Barak air defense systems, said an Indian Navy official.

印度海军官员表示，该船由孟买的Mazagon船坞有限公司兴建，成本超过5亿美元，INSShivalik拥有先进的雷达，反潜声纳，武器，包括俄罗斯Klub地对地导弹和以色列巴拉克地面防空系统。

Network users, for their part, get what Reid Hoffman, LinkedIn's chairman, calls an "active sonar" system that publicises their skills to a broad marketplace with minimal effort and collects the responses that ping back.

对于网络使用者而言，他们可以获得LinkedIn主席Reid Hoffman所说的&主动声纳&系统，该系统轻而易举就将他们的技能宣传到更大的市场并收集反馈信息。

According to the information of relative orientation from the airplane to airborne anti-submarine buoy, the mathematical model, adopting extended Kalman filtering technique, and simulation algorithm for calculating the buoy position are established in this paper. In respects of the relative position error and RMS error, the simulation results show the error performance of this system.

根据航空搜潜声纳浮标与飞机的相对方位信息，采用扩展卡尔曼滤波技术，分析了计算浮标位置的原理、方法，建立了相应的系统模型和仿真算法，从估计的相对位置误差和均方根误差两个方面，仿真分析了系统的误差性能。

Correspondents say that much of the search effort so far has been focused on finding flight data recorders, which have sonar beacons - or "pingers"- attached to them.

记者们称，迄今为止大部分搜索的努力集中于寻找飞行数据记录，与声纳信标，或说pingers相联。

On landing, a parachute stabilises the vehicle for water entry and it floats until a remotely operated vehicle deployed by the submarine homes on to it with a sonar pinger.

降落时，一个降落伞帮助该机稳定入水，然后漂浮着直到一个由潜艇部署的遥控潜器利用一个声纳声波发射器找到它。

The propeller shaft frequency is one of the important target recognition features for passive sonar.

螺旋桨轴频是被动声纳极其重要的目标识别特征之一。

By means of these conditions, computer searches out many quasi-perfect and double quasi-perfect binary array pairs with small sizes. The composite construction methods for quasi-perfect and double quasi-perfect binary array pairs are studied.

本文较为详细地分析综述了几十年来，最佳相关信号的研究成果，它已在现代通信、雷达、声纳、制导、空间测控、以及电子对抗等方面得到了广泛地应用，为工程应用提供更多具有良好相关特性的最佳离散信号是研究最佳离散信号的目的之一。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新