建立了目标噪声信号传播和衰减的数学模型。
Build target acoustic signal's transmission and attenuation math model.
目标噪声特征提取是被动声纳目标识别系统的关键技术。
Feature extraction of targets radiated-noise is the key technique of passive sonar target recognition system.
目标噪声特征提取和目标分类器设计是被动声呐目标识别系统的关键技术。
Feature extraction of targets radiated noise and design of targets classifier are key technique of passive sonar target recognition system.
目标噪声特征提取和目标分类器设计是被动声纳目标识别系统的关键技术。
Feature extraction of targets radiated noise and design of targets classifier are key issues of passive sonar target recognition system.
研究了影响目标噪声传播的因素：空气温度、湿度、风速、风向及大气中的雨雪等。
Study on several factors influent the targets acoustic signal's transmission such as: air temperature, air humidity, wind velocity, wind direction, rain and snow.
具体分析了以矩形光栅为例的周期性目标莫尔条纹式的混淆效应，以及非周期性目标噪声形式的混淆效应。
Moire effect as an aliasing phenomenon of periodic objects and aliasing contents as signal dependent noise of non-periodic objects are analysed.
日志级别的主要目标是帮助您过滤有用信息中的噪声。
The primary purpose of a logging level is to help you filter useful information out of the noise.
我们的目标是从大脑中找到解决办法，这个办法可以帮助人们在现代的环境中进行睡眠，比如现在的噪声环境。
Our goal is to find brain-based solutions that integrate a sleeping person into their modern environment, such that sleep is maintained even in the face of noises.
由于高分辨率SAR图像中，目标背景复杂，同时由于受相干斑噪声的影响，因此很难直接从原始图像数据中提取道路特征。
Due to the complicated background of objectives and the speckle noise in the high-resolution SAR images, it is almost impossible to extract roads directly from original remote sensing images.
本文研究的雷达视频回波信号模拟与仿真是针对机载下视脉冲多普勒雷达，包括目标信号、地杂波信号和噪声信号的模拟与仿真。
In the thesis, the video echo of the airborne PD radar was simulated. The simulated echoes include the signals of the target, the ground clutter and the noise.
高分辨率SAR图象中目标背景复杂，同时由于受相干斑噪声的影响，很难直接从原始图象数据中提取道路特征。
As the background of objectives in high-resolution SAR images is complicated and also affected by speckle noise, it is almost impossible to extract roads directly from original remote sensing images.
在二值边缘图像中应用双窗口分别选定目标和要去除的噪声，在各窗口中采用双向扫描提取目标特征。
Choose the target and the noise that will be removed in two Windows, then extract target with dual-direction scan in each window.
利用单个特征识别强噪声中的弱小运动目标，常因所提取的目标特征与噪声特征易混淆而导致高的虚警率。
Recognition algorithms for small moving target in strong noise based on single feature has a high false alarm. Sometimes the features of target and noise are very alike.
文章分析了参考输入中含有目标信号的本艇自噪声有源抵消器的性能。
This paper analyses the effect of the signal components in the reference input on the Performance of the active self noise canceler.
通过静态串扰噪声的峰值以及噪声宽度信息来识别串扰目标。
The static crosstalk noise peak and noise width are used to identify crosstalk target.
实验结果表明，所提出的多目标优化模型有较强的抗噪声能力，理论和实验有较好的一致性。
The experiment results indicate that the MOP in this paper has better consistency with the theory and practice as well as obvious advantage of antinoise ability.
利用真实舰船航行辐射噪声作为目标及干扰，正态分布高斯白噪声作为噪声背景，在基元等间隔线阵上实现了最佳空间滤波器。
The realization of OSF in the case of real target radiated noise in the background of Gaussian white noise for equal spaced line array is illustrated.
在原始测量获取的点云数据中，除了目标数据外，还有大量的噪声数据。
There are lots of noise data in the raw data except the target data.
我国噪声监测的最终目标是实现在线自动监测。
Achieving online auto monitoring is our ultimate target of noise monitoring.
红外图像中包含了大面积连续的背景、红外小目标以及噪声等几个部分。
The infrared image includes several aspects: great-area continuous background, small infrared target, noise and so on.
由于利用了HT，使得整个系统对于有噪声、目标残缺、背景复杂的目标图像具有较强的识别能力。
Due to the HT, the system is very effective in recognizing object in an image with noise, gaps and complicated background.
通过RLS自适应滤波器，背景杂波分量被准确地预测并从输入信号中去除，从而只剩下目标信号与残留噪声。
The clutter is predicted exactly and subtracted from the input signal by RLS adaptive filter, leaving components of the target signal in the residual noise.
对图像中的低频噪声，基于对图像中目标与背景灰度值特点的分析，提出了改进的差分去噪声模板。
An improving noise eliminated difference template based on the analysis of object and background gray value also has been developed to eliminate the low frequency noise in image.
根据目标、噪声和背景边缘在小波域的不同特点，提出一种基于小波分析的红外小目标检测算法。
According to their different characteristics of the targets, noises and background edges in wavelet domain, a small target detection algorithm based on wavelet analysis is proposed.
研究了用脉间步进频率雷达对杂波背景噪声下地面或海面动目标的探测。
This paper studies how to detect the moving targets on the land and sea surface in the background of clutters by using pulse-pulse step frequency radar.
研究利用矢量水听器测量水下目标低频辐射噪声的问题，并给出了测量方法和海上试验结果。
Studies the measurement of low frequency radiation noise from an underwater target by a vector hydrophone, discusses the method of measurement and presents the test results in the sea.
LCVCO设计的主要目标包括低相位噪声，宽调谐范围和低功耗等。
The main objective of LCVCO design is low phase noise, wide tuning range and low power consumption.
分析了低空目标声源的产生机理、目标辐射噪声在大气中的传播特性以及影响其传播的几个主要因素。
The mechanism of the produce of target noise, its transmission characteristics in air and several main factors that influence the sound transmission are analyzed.
文章还介绍了一种适合于分析噪声雷达信号中目标速度信息的谱分析方法。
One of the spectrum analysis methods suitable for speed information analysis in the noise radar signal is also introduced.
文章还介绍了一种适合于分析噪声雷达信号中目标速度信息的谱分析方法。
One of the spectrum analysis methods suitable for speed information analysis in the noise radar signal is also introduced.
应用推荐