结果表明：该方法提取的缺陷回波信号特征值，其可分性测度均值达91.7%，从而证明该方法对超声检测缺陷回波信号的特征提取是相当有效的。
The average value of separability measure is as high as 91.7%, which indicates that this method is quite effective in the feature extraction of ultrasonic flaw echoes.
研究了一种基于非相参雷达目标回波的特征提取算法。
The method of radar target waveform feature extraction is studied based on non coherent radar target echo.
在阵列信号处理中，提取回波信号中的空间频率，可以得到目标的方位信息。
In processing of array signal, Direction of Arrival (DOA) of target can be obtained by extracting spatial frequency of echo.
提出了基于目标回波自相关矩阵本征值分解提取多目标特征的新方法。
A method extracting multiple target feature by the eigenvalues decomposition of target echo autocorrelation matrix is presented.
第二种是运用多种正交变换结合的算法对回波进行特征提取工作。
The other one is to apply multiple sorts of orthogonal signal transformation to extract the information of the targets.
分析了检测信号的特征，并采用截止频率法成功地提取了微弱的缺陷回波信号。
The characteristics of the test signals were analyzed and weak defect echo signals were successfully extracted by cut-off frequency technique.
雷达目标模型化是提取目标的轮廓和重心等特征参数，进而通过模型匹配对目标回波进行判别处理的过程。
Radar target modeling is a technology which can extract the targets outline and barycenter characteristic, then does the distinction processing through the model matching to targets.
本文的结果可供在实际声呐波回波中提取极点，进而实现目标识别时参考。
The results can be applied to the extraction of poles and the identification of some target from the real sonar echo.
利用不同深度界面的回波频谱分析提取衰减系数剖面。
The attenuation is extracted by the spectrum of the layers at different depth.
阐述从高频地波雷达海洋回波反演海洋表面流中，使用MUSIC算法提取径向流方位必须的信号预处理。
In this paper, signal preprocessing for bearing determination of ocean surface radial current mapping by HF ground wave radar based on MUSIC is investigated.
本文利用小波变换系数的模的平方值与信号奇异性指数之间的关系，从超声回波信号中提取出了胎儿的心率。
The fetal heart rate can be extracted from the returning signal of ultrasound by way of the connection between the modulus of the wavelet transform coefficient and the singular exponent.
利用多重分形的概念对海杂波和舰船雷达目标回波进行了分析，并提取出其多重分形特征用于舰船目标检测。
In this paper, sea clutter and radar echoes from ship targets are analyzed with the concept of multifractal, and their multifractal dimensions are extracted for detection of ship targets.
该方法极大地提高了在高强度直达波干扰下主动声呐提取目标回波的精度。
This method is greatly increased in the high-intensity direct wave interference under active sonar echo extraction accuracy.
激光测高仪不仅可以精确测量目标的距离，还能够从回波信号中提取倾斜度、粗糙度等特征信息，应用十分广泛。
Laser altimeter not only can precisely measure the target distance, but also extract characteristic information, such as inclination, roughness etc. from its echo signals. So they are applied widely.
该方法对提取目标回波信号、提升其信号强度、抑制杂波干扰和噪声有良好的效果。
This method is good for the echo signal is distilled and the intensity is advanced and the clutter and the yawp are restrained.
由于INS/GPS数据难以满足成像精度要求，从回波数据中提取运动参数，用于运动补偿。
Since the INS/GPS does not meet the need of imaging, Doppler parameters are obtained from SAR raw data to compensate the motion error.
如何测量回波的多普勒频移，实现测流速的目的。 文中从二维信号矢量的角度分析了多普勒频移调制和解调的过程，推导出提取速度信息的信号处理方法。
Using two-dimensional signal vectors, the process of Doppler shift modulation and demodulation is analyzed, and a signal processing method for extracting flow speed information is derived.
本文研究了利用小波变换提取水下目标瞬态回波的边缘特征并进行目标分类的可行性。
The feasibilities of using wavelet transform to extract the edges of the echoes and then classify the targets based on the edge features have been studied in this paper.
提出了最大熵谱估计和LMS自适应算法提取激光测距系统的反射回波信号。
Maximum entropy spectral estimation and LMS adaptive algorithm were proposed to extract the reflection echo signal of laser ranging system.
从回波信号中进行多目标信号分离和提取始终是防撞雷达的一个关键技术难点。
It is more difficult to estimate and separate LFM as a result of the appearance of multi-object and the applying of Multi-LFM radar wave signal.
仿真与实际测试结果表明，该方法能有效提取远距离微弱激光脉冲回波信号，从而提高系统信噪比，扩大了系统原有的测程。
Simulation and actual test result shows that the new arithmetic could detect weak laser pulse signal effectively, increase the SNR and expand measuring range of laser range finder.
根据模极大值在特征提取中的应用，本文提出了一种基于模极大值的超声波回波探测沉积物分类方法。
A classification method was proposed based on the application of modulus maxima in feature extraction. Different echo is gained to detect different sediment.
高分辨雷达回波信号处理和特征提取技术受到广泛的关注。
Signal processing and feature extraction of high-resolution radar echoes have received intensive attention in recent years.
在超声反射回波的数学模型基础上，利用小波滤波方法对超声信号进行预处理，提取强噪声背景中的弱回波信号。
This paper attempts to preprocess ultrasonic signal by wavelet filtering based on the mathematical model of the ultrasonic echo, extracts weak echoes from signal with high noise background.
为了对雷达目标环境进行深入研究，以提高高度提取算法的性能，需要对回波特性进行分析研究。
Radar target environment needs to be deeply studied to improve properties of height detection algorithm, thus terrain return properties need to be analyzed and studied.
通过实时提取信号的幅度及形状的综合特征计算出信号的时延。该方法具有较强的抗干扰能力，算法快速、准确，适合于多波束声呐系统的回波信号实时分析处理。
The algorithm is fast and accurate with a strong anti-jamming capability, which can be used for echo signal analysis and processing in real-time multi-beam sonar systems.
仿真分析表明，最大熵谱估计和LMS自适应算法相结合可以有效地从背景噪声中提取有用的激光反射回波信号。
Simluation results show that the maximum entropy spectral estimation and LMS adaptive algorithm can extract echo signal of laser ranging system effectively from background noises.
本论文介绍了现有的从高频雷达回波多普勒谱中提取风向的几种方法，分析了这几种方法的不足之处。
This paper introduces several methods retrieving wind direction from HF radar echo Doppler Spectrum and analyses the feature of those methods.
针对焊接缺陷超声检测中信号处理的特征提取问题，应用高阶谱方法对三类压力容器焊接缺陷的超声回波信号进行了分析。
The ultrasonic echoes of welding flaws for three types of pressure vessel are analyzed for feature extraction of signal processing using higher-order spectrum method.
为了给LFMICW雷达高度计高度提取算法提供计算机模拟数据源，需要对高度计的大地回波进行建模和仿真。
In order to provide simulated data source for LFMICW radar altimeter height detection algorithm, terrain return of LFMICW altimeter needs to be modeled and simulated.
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