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intra-pulse
相关语句
  脉内
     INTRA-PULSE FEATURE ANALYSIS OF RADAR EMITTER SIGNALS
     雷达辐射源信号脉内特征分析
短句来源
     In this thesis, the principle of Pulse-Doppler Radar and its signal features、thetheory of coherence、intra-pulse modulated signals、time-frequency analysis and patternidentification theory are discussed in detail.
     本文详细介绍了脉冲多普勒雷达的原理及其信号特征、相参性原理、脉内调制信号、时频分析理论和模式识别理论等,重点讨论了利用时域自相关法和频域谱线分析法进行相位相参性的检测;
短句来源
     A New Method for Time-frequency Analysis of Intra-pulse Radar Signal
     雷达信号脉内时频分析的一种新方法
短句来源
     Simulation experiments showed HHT is a multi-signal processing method; it can accurately describe the change of instantaneous frequency; and can distinct the intra-pulse modulation types clear between various types of radar signals;
     3 将HHT应用于雷达信号处理,提出了基于HHT的雷达信号脉内分析方法,仿真实验表明HHT分析方法具有多信号处理方法,能准确地描述信号的瞬时频率的变化规律,能清晰地区分各类雷达信号的脉内调制类型,并便于对调制参数进行估计。
短句来源
     At present, the general methods to research intra-pulse fine features include autocorrelation method in time field, inverse spectrum technique in frequency field, detecting at zero point in modulation field, and so on.
     目前研究较多的脉内细微特征分析方法有:时域自相关法、频域倒谱法、调制域过零检测法等,本文从原理、实现流程和自动识别技术入手,详细分析了这些方法的特点,并提出了一种全息脉内特征提取方案。
短句来源
更多       
  “intra-pulse”译为未确定词的双语例句
     Extraction for Intra-pulse Characteristics of Multi-component LFM Signal Based on TFR-HT
     TFR-HT的多分量LFM信号脉内特征提取方法
短句来源
     Deinterleaving of Radar Signals and Analyzing Fine Features of Intra-pulse Signals
     雷达信号分选与细微特征分析
短句来源
     The results show that the theory of intra-pulse chirp and inter-pulse stepped frequency is correct and feasible.
     对国内首次研制完成的宽带导引头系统进行了一系列的试验,给出了实测结果,验证了本文所论述理论的正确性。
短句来源
     In the face of more and more complex radar signal environment, ECM systems of new generation not only use the five conventional parameters, i.e. direction of arrival, radio frequency, time of arrival, width of pulse and amplitude of pulse, to deinterleave pulses, but also have the ability to analyse and pick up radar signals' intra-pulse fine features.
     面对日益复杂的雷达信号环境,新一代电子对抗系统除继续利用到达方向、载频、到达时间、脉宽和脉冲幅度这五个常规参数来进行分选外,还必须具有提取和分析雷达信号细微特征的能力。
短句来源
     The concrete method is analyzed in theory,and the simulation results show the method can analyze the intra-pulse feature of baseband phase-coded signal at lower SNR.
     理论分析了算法的实现过程,并进行了仿真试验,仿真结果表明,该算法在较低信噪下可以实现基带PSK信号的编码规律恢复。
短句来源
  相似匹配句对
     Intra-Abundant semigroups
     内禀富足半群(英文)
短句来源
     (5) intra-alveolar hemorrhage;
     (5)肺泡内出血;
短句来源
     The Enhanced H.264 Intra Prediction
     H.264帧内方向预测增强模式
短句来源
     Treatment of intra articular fractures
     重视关节内骨折的治疗
短句来源
     PULSE PUMP
     脉冲泵
短句来源
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  intra-pulse
Synthetic stimuli consisted of six series in which the following acoustic parameters were systematically modified, one at a time: PAM rate, pulse duration, number of pulses, and intra-pulse SAM rate.
      
Each of the sound pulses contains intra-pulse sinusoidal-amplitude-modulations (SAMs).
      


This paper analyzes the technology with intra-pulse chirp and inter-pulse stepped frequency to obtain high-resolution range profile.The echo expressions of static and moving targets are derived.According to the echo expression of chirp-subpulse signal,the sampling position requirements of signal processor are discussed.

本文分析阐述了利用脉内调频、脉间跳频技术获取距离高分辨一维成像的可行性 ,导出了静止目标和运动目标的回波表达式 .根据线性调频子脉冲的回波表达式 ,详细分析了运动目标回波对信号处理器采样位置的要求 .

The ambiguity function of intra-pulse chirp and inter-pulse stepped frequency signal is analyzed and obtained according to new type radar.Firstly,the expression of the signal is given.Then the concrete expression of ambiguity function of the signal is derived in accordance with the negative-type definition of ambiguity function.Last the brief analyzing of the ambiguity function is completed and the conclusion that the signal can achieve the high resolutions of range and speed is proved.Making use of the...

The ambiguity function of intra-pulse chirp and inter-pulse stepped frequency signal is analyzed and obtained according to new type radar.Firstly,the expression of the signal is given.Then the concrete expression of ambiguity function of the signal is derived in accordance with the negative-type definition of ambiguity function.Last the brief analyzing of the ambiguity function is completed and the conclusion that the signal can achieve the high resolutions of range and speed is proved.Making use of the signal,a test system is developed and the ability of high range resolution is verified.

本文结合新型体制脉内调频、脉间步进跳频雷达 ,分析推导了该信号形式的模糊函数 .根据负型模糊函数的定义导出了完整的模糊函数表达式 ,最后对该模糊函数的特性进行了简要的分析 ,得出了利用这一信号能够得到距离维和速度维高分辨力的结论 .利用这一信号构成了一个试验系统 ,进行了室内及外场试验 ,验证了理论的有效性

Intra pulse feature extraction is a key issue in advanced radar emitter signal recognition. A novel approach was proposed to extract intra pulse features from radar emitter signals to recognize different radar emitters. Fractal dimensions of radar emitter pulse signals were regarded as the classification features to recognize different intra pulse modulations. With the change and distribution information of magnitudes, frequencies and phases of radar emitter signals, the features reflect the laws of intra pulse...

Intra pulse feature extraction is a key issue in advanced radar emitter signal recognition. A novel approach was proposed to extract intra pulse features from radar emitter signals to recognize different radar emitters. Fractal dimensions of radar emitter pulse signals were regarded as the classification features to recognize different intra pulse modulations. With the change and distribution information of magnitudes, frequencies and phases of radar emitter signals, the features reflect the laws of intra pulse modulation of radar emitter signals. It is proved in theory that the fractal features are not sensitive to noise, which is also shown in simulation experimental results. Experimental results of fractal feature extraction and automatic recognition of 10 typical radar emitter signals show that the fractal features have large between classes distance and small within class distance, and they achieve high accurate recognition rate, which verifies the approach is valid.

脉内特征提取是新型雷达辐射源信号识别的关键问题.本文提出一种新的雷达辐射源信号脉内特征提取和识别方法.将雷达辐射源脉冲信号的分形维数作为识别脉内调制方式的分类特征,这些特征包含了雷达辐射源信号幅度、频率和相位等的变化和分布信息,反映了雷达辐射源信号脉内调制规律,理论分析和仿真实验结果都证明了这些特征具有对噪声不敏感的良好特性.通过10种典型雷达辐射源信号的特征提取和分类识别的实验结果表明,本文所提取的脉内特征类间距离大、类内距离小、正确识别率高,证实了本文方法的有效性.

 
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