A method has been developed to calibrate the positions of the transducer and the transponder in the ultra-short baseline acoustic position system (USBL).
提出了超短基线水声定位系统(usbl)的校准方法，并用模拟数据进行了验证。
The key techniques of underwater acoustic positioning and navigation are the navigation method and the precise calibration of the absolute position of the seabed transponder.
导航方法和海底应答器绝对位置的校准是水声定位导航技术的关键。
Ultra Short Baseline (USBL) Position System is an under water acoustic Position system, which realize Position, track and data communication to several under water cooperative targets.
超短基线定位系统是利用水声定位技术实现对多个水下合作目标进行定位、跟踪和数据传输的系统。
The effectiveness of the control depends upon the strength and frequency of the acoustic excitation but is insensitive to the emitting position.
声控分离的效果依赖于激励强度和频率，而对激励位置并不敏感。
It establishes a planar wave acoustic passive localization model, and designs the general structure of the position system using simple passive acoustic sensor arrays.
建立了一种平面波声被动定位模型，利用简易被动声传感器阵列，分析并设计了定位系统的总体结构。
The acoustic holography technique for sound source identification and position by the method of continuously scanning improves the previous acoustic holography experiment.
连续扫描声全息声源识别定位技术是对以往声全息实验方法的改进。
According to position principle, it is necessary to get buoys' location besides targets' acoustic information.
根据定位原理，除了测量目标的声学信息外，必须得到浮标的位置信息。
As an objective diagnostic method, aural acoustic impedance measuring device holds a very important position in diagnosing ear diseases and hearing obstacles.
作为一种客观的诊断方法，耳声阻抗测量仪在临床耳疾和听力障碍诊断方面具有重要地位。
The angular distributions of power and radiation enhancement factor strongly depend on the position of acoustic source relative to the unit-cell where the source is placed.
我们数值地研究了镶嵌在方形排列的声子晶体中声源的能量辐射角度分布。结果表明，能量辐射角度分布和增强因子强烈地取决于源相对于所处单胞的位置的对称性。
Due to their slanted position and the air cushion in between the ribs are optimally adjusted to the acoustic behaviour of the poloplast above ground drainage systems polo-kal ng and polo-kal3s.
由于这些肋条是倾斜状态，中间还有气垫，使其能优化调节poloplast的polo-kalng和polo-kal3s系列地上排水系统的声学特性。
Results Among 21 cases presented hyperechogenic on ultrasonography. There were 18 cases with acoustic shadow and all calculi moved as position changed.
结果在21例睾丸鞘膜腔内结石的超声表现中，21例均为强光团，18例后伴声影，21例强光团均可移动。
Conclusion The major characteristics of calculi in the cavity of perididymis on ultrasonography are hyperechogenic with acoustic shadow and calculi moved as position changed.
结论强光团、后伴声影、可移动是睾丸鞘膜腔内结石的主要超声征像。
The system circuits are based on DSP and single chip computer, and can calculate the target's position information by using received acoustic signal, and display its moving curve timely on PC.
系统硬件以DSP和单片机为核心，能够通过接收到水下目标发射的合作声信号，实时准确的解算出水下目标的方位参数，并能在PC机上显示目标的运动曲线。
The system circuits are based on DSP and single chip computer, and can calculate the target's position information by using received acoustic signal, and display its moving curve timely on PC.
系统硬件以DSP和单片机为核心，能够通过接收到水下目标发射的合作声信号，实时准确的解算出水下目标的方位参数，并能在PC机上显示目标的运动曲线。
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