声纳

In recent years, SAW devices have been extensively applied in present wireless communication field, optical fiber communication network, aerial traffic control, electronic warfare, nondestructive examination, sonar, and television technique for their merits of minitype, high reliability, good consistency, multifunction, flexibility of design and so on.

由于声表面波器件具有小型、可靠性高、一致性好、多功能以及设计灵活等优点，所以它在现代无线通讯领域、光纤通讯网络、空中交通管制、电子战、无损检测、声纳以及电视技术中得到了广泛的应用。

Signal aliasing is a key problem in applications of modern sonar systems based on fiber-optic hydrophones.

信号混叠是基于光纤水听器的现代声纳系统走向应用必须解决的一个关键问题。

Gunner watched the bottom of the ice field unfold on the sonar repeater, a video display that duplicated the screens in the sonar room.

刚纳通过面前的声纳复示器开始研究冰底的情况。复示器上显示的是声纳室传回的实时图像。

The new suspensory sonar would be AN/ASQ-22 by Ratheyon, with a 2,550 feet rope. The 25 tubes sonar buoyages of B version is kept onboard. For hunting enemy ships, SH-60R gets a AN/APS-147 ISAR radar.

新的机上吊放声纳为雷声公司的AN/ASQ-22雷达，吊放距离765米。B型的25管声纳浮标被保留。

The purpose of this thesis is to reserch and design a digital fish torpedo SONAR pulse detect system, to solve some defect which exist in traditional SONAR, to accomplish real-time detect the aim and judge the aim's type and estimate the center frequency, angle, dsintance, repeat period of target, to follow the fast moving target, as well as to adapt the system to different flank three sub-array types without the limitation of installation place.

本文的目的在于研究并设计数字式鱼雷声纳脉冲侦察系统，解决传统声纳中存在的一些弊端，实现对鱼雷脉冲信号的实时检测，以及对信号的种类，中心频率，目标的方位，距离信息，重复周期的估计，对快速运动目标的跟踪测距，使系统不受安装场合的限制，适用于不同的舷侧三元子阵。

Mission : Dipping sonar behind clamshell doors at rear of fuselage pod; sonobuoys stowed internally.

宗旨 ：浸渍门声纳在背后翻盖机身后方荚；声纳浮标存放在内部。

Dipping sonar housed in compartment at rear of main cabin, immediately forward of tailboom, and search radar (NATO 'Short Horn') in flat-bottom undernose radome (diameter 1.25 m; 4 ft 1 in) on anti-submarine version, which can have a canister of sonobuoys mounted externally aft of the starboard main landing gear.

声纳安装在车厢浸在主客舱后部，立即向前tailboom和搜索雷达在平底undernose罩（直径1.25米，4英尺1）对反潜版本，它可以有一个外部的声纳浮标筒安装在右舷船尾主起落架。

In this thesis, the studies about positioning methods in applying the multistatic sonar are carried out according to the features of this kind of sonars. By simulation, The performances of several methods are compared and evaluated.

本文依据双/多基地声纳的工作特点，对双/多基地声纳应用中的各种定位方法进行了研究；并通过仿真，对各种方法进行了性能评估和比较。

Besides, the geometrical distribution of error in different station layout and the best precept of station position are analyzed.

同时，以某型声纳为实例，讨论了多基地声纳的配置方案。

Application program manifests that the model simulates correctly the sonar's principle of sound reflection wave and sound shadow. The application is useful in theory research and simulation training especially.

软件实现结果表明，所给方法能正确仿真高频图像声纳的工作原理，准确表现声纳回波和声影图像，在理论研究、尤其是模拟训练领域具有重要应用价值。

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