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信号
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  signal
    Researches on the Detection of Weak Targets by Signal Integration
    微弱目标信号积累检测的方法研究
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    Research on and Applications of Adaptive Signal Detection Techniques for High Frequency Channels
    高频信道自适应信号检测技术的研究及应用
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    Study on Fractal Method for Radar Signal Detection
    雷达信号检测的分形方法研究
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    Study on the Theory of Multifrequency Signal Detection and its Application in Digital Measurement of Waveform Parameters
    基于现代DSP技术的多频信号测量理论研究及其在数字波形参数测量中的应用
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    Joint Estimation Technique of Array signal parameters
    阵列信号多参量联合估计技术研究
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  signals
    Parameter Estimation For Several Complex Signals Using Higher-order Cyclic Statistics
    几种复高阶循环平稳信号的参数估计研究
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    Study of Time—Frequency Analysis and Processing of No—stationary Signals
    非平稳信号的时频分析与处理方法研究
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    Nonlinear Adaptive Prediction Technologies of Chaotic Signals and Its Applications
    混沌信号的非线性自适应预测技术及其应用研究
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    Multi-parameter Estimation Technology of Wide-band Array Signals Based on High-order Cumulant
    基于高阶累积量的阵列信号多参数估计技术
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    Research on Non-Stationary Processing Methods of Low Probability of Intercept Signals
    低截获概率信号非平稳处理技术研究
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  signals and
    Nonlinear Adaptive Prediction Technologies of Chaotic Signals and Its Applications
    混沌信号的非线性自适应预测技术及其应用研究
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    Analysis of MSK Signals and Computer Simulation for Its Channels
    MSK信号分析及信道的计算机模拟
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    Analysis of Discrete Signals and Systems by Using Generalized Functions
    离散信号与系统的广义分析
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    Adaptive LSL Deconvolution of Seismic Signals and Feature Extraction of Reflection Coefficient Seguences
    地震信号的LSL预测反褶积及地层反射系数的特征抽取
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    Detection of IJF-OQPSK modulated signals and its performance of bit-error rate
    IJF-OQPSK调制信号的检测及其误码率性能
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  “信号”译为未确定词的双语例句
    Parameter Estimation of Two-dimensional Harmonics in Complex Noise
    复杂噪声背景下的二维谐波信号参量估计问题研究
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    Study on Synthetic Aperture Radar Echo Simulation
    合成孔径雷达回波信号模拟研究
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    Algorithms of Blind Source Separation in Time and Frequency Domains
    盲源信号分离时域与频域算法研究
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    Phase Coherent Frequency-hopped Waveform Synthesis by Using the SAW Chirp Transform
    SAW Chirp变换综合相干捷变频信号
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    The Power Spectral Density of Digital Modulations Transmitted Over Bandpass Nonlinear Channels
    数字调制信号经带通非线性信道传输后的功率密度谱
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  signal
In the early 1960s research into radar signal synthesis produced important formulas describing the action of the two-dimensional Fourier transform on auto- and crossambiguity surfaces.
      
It is shown that the one-dimensional sampling sets correspond to Bessel sequences of complex exponentials that are not Riesz bases for $L^2[-R,R].$ A signal processing application in which such sampling sets arise naturally is described in detail.
      
Given a bandlimited signal, we consider the sampling of the signal and some of its derivatives in a periodic manner.
      
We present a method for finding the dual frame and, thereby, a method for reconstructing the signal from its samples.
      
We show that if no sampling of the signal itself is involved, the sampling is not stable and cannot be stabilized by oversampling.
      
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  signals
They are potential tools for the decomposition and handling of signals that, like speech or music, seem over short intervals to have well-defined frequencies that, however, change with time.
      
Multiresolution Analysis and Multivariate Approximation of Smooth Signals in CB(Rd
      
Frame Analysis of Irregular Periodic Sampling of Signals and Their Derivatives
      
Unique reconstruction of band-limited signals by a Mallat-Zhong wavelet transform algorithm
      
The radar ambiguity function plays a central role in the theory of radar signals.
      
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  signals and
Frame Analysis of Irregular Periodic Sampling of Signals and Their Derivatives
      
The additional control of HVDC with unmodeled dynamics only uses the local signals and its design is simple, furthermore it can obviously improve the stability of power system in different operational conditions.
      
Control signals and actions are bounded by geometric constraints.
      
Comparison of Species-Specific Bird Signals and Human Speech
      
Criteria were formulated for the comparison of bird's signals and human speech.
      
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本文叙述一个用来检验核物理中电子学仪器的脈冲发生器的线路。这个脈冲发生器可以产生单个的或成双的矩形脈冲。除了矩形脈冲外,还可以产生形状类似于各种辐射探测器(闪烁计数器、正比计数器、电离室等)所产生的脈冲信号。 输出信号能够随时间均匀分布或按统计分布。 脈冲的延续时间,重复频率,双脈冲之间的时间间隔,可以在很大的范围内改变。

A practical means is presented for the design of a coherent Integrating Filter (GIF) covering the whole doppler frequency range with a single channel, as it is much simpler than the usual way of implementing the coherent integration by a large number of parallel channels each matched at a different doppler frequency, therefore it is easier to implement and superior than the parallel matched filters scheme. The paper has analyzed the principle of operation of the GIF, pointed out that it is equivalent to a set...

A practical means is presented for the design of a coherent Integrating Filter (GIF) covering the whole doppler frequency range with a single channel, as it is much simpler than the usual way of implementing the coherent integration by a large number of parallel channels each matched at a different doppler frequency, therefore it is easier to implement and superior than the parallel matched filters scheme. The paper has analyzed the principle of operation of the GIF, pointed out that it is equivalent to a set of high frequency sweeping comb filters but with no sweeping loss. GIF implements the optimum receiver by inclined cutting the Woodward's "uncertainty function" as contrast with the ax-is parallel cutting implemented by the matched filters.The block diagram of a radar system with GIF is presented in the last section and the choice of some system parameters is explained.

提出一个具有能在未知多卜勒频移情况下不需分路的相参积累器,它比一般分路方案可以简单得多。因此在从噪声中发现微弱信号的角度来看,优于其他曾提出过的任何积累方案。文中分析了这种积累器的作用原理,提出了利用这种积累器组成的积累滤波器如何能对脉冲串高频信号获得最佳信噪比,并用模糊度函数的概念说明了这种积累滤波器的实质,指出它比脉冲串匹配滤波器更优越和具有较大的实现可能性。最后还讨论了利用这种设备进行雷达站设计的要点和某些工作参数的选择与考虑。

The output signal-to-noise ratio (snr) of correlation detectors is analized.A correla-tion detector is a divice, which consists of two input filters, one output filter and one multiplier, and has two input pairs of terminals and one output pair of terminals.Unlike that described in papers[1][[2][[3] and[3], effects of input filters are consid ered in this paper. The formulation concerning the relation between the input snr and the output snr are derived, and special working conditions of correlation detectors...

The output signal-to-noise ratio (snr) of correlation detectors is analized.A correla-tion detector is a divice, which consists of two input filters, one output filter and one multiplier, and has two input pairs of terminals and one output pair of terminals.Unlike that described in papers[1][[2][[3] and[3], effects of input filters are consid ered in this paper. The formulation concerning the relation between the input snr and the output snr are derived, and special working conditions of correlation detectors are discussed.The conclusion is us follows: For small snr, the output snr is proportional to the products of two input snr; if the input snr of one channel is much lorger than the other and than 1, the output snr will be proportional to the smaller input snr; for all conditions (either strong signal, or weak signal) . the output snr of correlation detectors is comparable to the squar law detector's.

本文分析讨论相关检波器的输出信号杂音比,所谓相关检波器是这样一种装置,它包含两个输入和一个输出并由两个输入滤波器、一个输出滤波器和一个乘积器组成。和以前有过的讨论不同,文中考虑到了输入及输出滤波器的影响,导出了输入及输出信号杂音比关系的公式,讨论了相关检波器的几种特殊工作形式。结果指出,在小输入信号杂音比情况下,输出信号杂音比和两路输入信号杂音比的乘积成正比;在一路输入为大信号(相对于杂音)的情况下,输出信号杂音比和另一路输入信号杂音比成正比;无论在大信号或小信号输入情况下,相关检波器的输出信号杂音比与同样情况下平方检波器的输出信号杂音比是同量级的。

 
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