在复杂电磁环境中，信号密度大且信号形式多样，这给电子侦察带来了很大困难。
In a complex electromagnetic environment, the signal is dense, and signal forms are various. These have posed great difficulties for radar reconnaissance.
图3——直方图，垂直直方图做为电压功能显示了信号密度，并有助于噪音可视化。
Fig. 3 - histogram. A vertical histogram shows the signal density as a function of voltage, and helps to visualise noise.
上式表明：功率型信号的自相关函数与其功率谱密度函数构成傅立叶变换对。
Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.
根据信号、本底的时间分布以及时间、时间误差、质量、质量差等变量之间的关系，构建概率密度函数。
The probability density function (PDF) is constructed from the time distributions of signal and backgrounds and the relations among time, time uncertainty, mass, and mass difference variables.
一些不同的数字调制信号有着相同或相近的功率谱密度，但它们的谱相关函数却有明显区别。
Different types of digitally modulated signals that have similar, if not identical, power spectral density functions can have highly distinct spectral correlation functions.
方法利用低密度脂蛋白作用人血管内皮细胞系ecv304，通过基因芯片分析人信号传导相关蛋白的表达谱。
Methods Microarray analysis on human signal transduction associated proteins was applied to profile changes in gene expression of human ECV304 endothelial cells induced by low density lipoprotein.
物理含义：能量信号的自相关函数与能量谱密度函数构成傅立叶变换对。
Physical meaning: the self-correlation function and the energy spectrum density function compose a Fourier transform pair.
若上述正实条件仅在某些频带上满足，则FXLMS算法的收敛将依赖于参考信号功率谱密度的分布。
But if above positive real condition is satisfied only within some frequency range, the convergence of FXLMS algorithm is dependent on the spreading of power spectral density of the reference signal.
减少元件和电路的几何尺寸，以达到增加电路的封装密度、减少功耗和减小信号传播延迟的目的。
The reduction in size of components and circuits for increasing package density and reducing power dissipation and signal propagation delays.
设计和验证超高密度FPGA的方法是采用逻辑分析仪、示波器和总线分析仪，通过测试头和连接器把信号送到仪器上。
Making use of logic analyzer, oscillograph and bus analyzer, we can design and test the superhigh density FPGA, and transmit the signal to the instrument through probe and linker.
高性能的数字信号处理器TMS320LF2407、高功率密度的永磁同步电机和先进的直接转矩控制技术的组合，能很好地完成对电动汽车的驱动。
The combination of advanced technology through high performance digital signal processor (DSP) TMS320LF2407 with PMSM of high power density and DTC can perform a drive for EV.
给定具体的数字调角形式，用这种方法可在计算机上计算所给信号的平均功率谱密度。
Giving concrete digital-modulated form, the mean power spectrum density of the signals discussed can be obtained in this way. The calculation can be done on computers.
减少电子部件和电路元件的尺寸并增加其组装密度，使其所占空间、电源消耗和信号传输的时延均降低。
The reduction in size and increase in packing density of electronic components and circuit elements, resulting in less space, less power, and less delay in signal propagation.
设计了CMIX IS的应用电路，得到了不同密度、不同尺寸材料的视频信号波形。
The application circuit of CMI X IS was designed, the video signal waveform of different density and different size material was obtained.
菌细胞密度、表面接触和生理学信号均可成为群集运动的刺激因素。
Bacterial density, surface contact and physiological signals are stimulating factors of swarming motility.
压力信号的功率谱密度具有频率波动范围窄、幅值大的特点；
They obey normal distributions. Distributions of power spectral density (PSD) for pressure signal display narrower frequency range and higher amplitude.
它是建立在阵列输出信号和噪声参数联合后验概率密度基础上的空间谱估计。
It is established on the expected value of the theoretical spatial spectrum over the joint posterior density function of the array output signal and noise parameters.
由于MQAM信号的概率密度函数服从莱斯分布，从而用莱斯分布来构造识别算法。
Because the probability density function of MQAM signal obeys L-S distribution, so it may construct the algorithm of discerning with L-S distribution.
是一个广告名词，泛指条状的质量控制工具；例如：“色彩控制条”，“密度控制条”和“信号条”。
Control strip A general term which refers to the various quality control aids in strip form, e. G. "Colour strip", "Density control strip" and "Signal strip", etc.
利用概率密度技术捕捉声信号的微小变化，能够有效地识别气侵并报警。
The possibility density technology was used to entrap a little change of acoustical signal, which can discern the gas incursion and give the alarm efficaciously.
它允许使用非常低的直流电阻(DCR)功率电感(0.3米？)通过增强电流检测信号的SNR最大化变换器效率和增加功率密度。
It enables the use of very low DC resistance (DCR) power inductors (0.3m?) by enhancing the SNR of the current sense signal to maximise converter efficiency and increase power density.
功率绕组和信号绕组都放在一块pc B上以减少生产成本和提高功率密度。
Both the power winding and the signal transfer winding are incorporated in a PCB to reduce the labor cost.
算法利用了信号进行傅里叶变换后功率谱密度中所包含的信号特征在基带完成，并用软件实现。
This algorithm has utilized the signal to carry on the signal characteristic that Fourier includes in the density of the power spectrum after Fourier transform.
该方法利用三角波信号作为测试激励，采用码密度直方图分析方法快速计算ADC的各静态参数。
The static parameters of ADC were extracted from the histogram of ADCs out codes, which was stimulated with triangle-wave signal.
该方法利用三角波信号作为测试激励，采用码密度直方图分析方法快速计算ADC的各静态参数。
The static parameters of ADC were extracted from the histogram of ADC's out codes, which stimulated with triangle-wave signal.
由于扩频信号具有功率谱密度小、抗干扰能力强、保密性好等优点，已被广泛应用于军事和非军事领域。
Spreading spectrum signals have been widely used in military and civilian fields, owning to the low power spectral density, strong anti-interference ability, good confidentiality and so on.
明确给出了信号幅值密度分布函数的定义。
The function on signal amplitude density distribution is clearly defined.
在舰船尾流区与非尾流区之间存在显著的速度差和盐度（或密度）差，利用电导率探头可获得对应于这些差别的尾流电导率信号。
Velocity and salinity(or density) differences between the wake area and non-wake area of a surface ship may be measured with an electric conductivity probe.
频域近红外光谱系统利用一个高频正弦信号对光源进行调制，从而在大脑这类强散射介质中形成一种漫射光子密度波。
The frequency-domain NIRS instruments modulate the light with a RF sine wave, which generates diffuse photon density wave (DPDW) in turbid tissue like brain.
目的以门诊量资料为例，计算功率谱密度函数，研究时间序列信号的频率域特征。
Objective The power spectral density functions of outpatient flow are calculated in order to study the spectral characteristics of the given time series.
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