sonars

The technology of data visualization is used in explanation and analysis of the data of sonars .

在水声学领域，对声纳数据直观的解释和分析需要运用可视化技术来对声纳数据进行研究。

The Influence of Signal Ambiguous to the Time Delay Estimation in Passive Ranging Sonars

被动测距声呐中信号模糊对时延估计的影响

Using this fusion method in a detection system which contains multiple sonars , a satisfactory detection performance is obtained .

将该方法用于航空探潜系统中多部声呐的信息融合，收到了良好的效果。

The Application of Kalman Filter in Passive Ranging Sonars

卡尔曼滤波在被动测距声呐中的应用

The traditional SONARs are consisted of middle or small scale Integrated circuit . Their hardware is big and low calculation ability .

传统被动声呐系统多半采用中小规模集成电路，体积较大，硬件处理能力低。

New techniques used in profilers and side-looking sonars ;

地层剖面仪和旁视声纳的新进展；

Naval ships face increasingly serious threats from hostile scouting sonars in modern oceanic battlefields .

在现代海战中，舰艇面临着越来越严峻的敌方侦察声纳的威胁。

As the improvement of detection range of active and passive sonars , vibration and noise reduction of submarine has become an important problem .

随着主、被动声纳探测距离的不断提高，潜艇减振降噪问题至关重要。

So it is very hard and important for us to find ways to suppress reverberation for active towed array sonars .

因此对于主动声呐（如主动拖曳阵声呐），抗混响既十分重要又十分困难，其中信号形式的合理利用是一个重要手段。

Piecewise correlators can be used in sonars transmitting continuous narrow-band random signals to avoid decorrelation caused by phase fluctuation of received signals .

在发射连续窄带噪声的相关声呐中，为了使相关输出不受回波相位起伏的影响，可以采用分段相关器。

A method for identifying outliers in data observed from sonars The Time Delay Estimation ( TDE ) is very important in passive ranging sonars .

声呐测量数据中异常值的辨识方法被动测距声呐中的关键技术问题是对两对水听器所接收信号的时间差进行估计。

A chirp scaling imaging algorithm with non-uniform sampling in azimuth and without approximation of stop-and-hop for multiple-receiver synthetic aperture sonars

基于非停走停及方位非均匀采样的多接收阵合成孔径声纳CS成像算法

Available sensors include a vision sensor ( color monoscopic camera ), range sensors ( sonars and IR detectors ), and bumpers for collision detection .

可用的传感器包括视觉传感器（彩色照相机）、范围传感器（声波和红外探测器）以及碰撞检测的缓冲。

However , all of the passive sonars are constrained to range broadband targets only , remaining useless in ranging for impulse targets up till now .

但是迄今为止，被动声呐仍然局限于检测宽带目标，对于脉冲目标没有跟踪定位的能力。

As the data of sonars is indeterminacy , the paper also do some research on the understanding method of sonar data , which is helpful for AUV to provide dependable environment information .

针对声纳数据的不确定性，论文对声纳数据的理解方法进行了研究，为AUV的环境模型的建立提供了可靠环境信息。

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。