Fig. 3 - histogram. A vertical histogram shows the signal density as a function of voltage, and helps to visualise noise.
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。
This paper proposes a blind identification approach to direction of arrival estimation of coherently distributed sources without knowing the accurate function forms of the angular signal density.
针对相干信号源分布式目标，在具体的空间信号分布函数形式未知的情况下，提出了一种基于盲辨识的分布式目标波达方向（DOA）估计方法。
Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.
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。
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.
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。
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.
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。
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.
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。
According to the relationship between auto correlation function and its spectral density, a new type of decision tree method based on signal analysis theory is proposed in this paper.
该文根据自相关函数与谱密度函数之间的对应关系，提出了一种新的基于自相关函数的决策树归纳学习算法。
The reduction in size of components and circuits for increasing package density and reducing power dissipation and signal propagation delays.
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。
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.
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。
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.
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 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.
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 application circuit of CMI X IS was designed, the video signal waveform of different density and different size material was obtained.
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。
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.
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。
The methods of computation and realization of signal power spectral density are mainly discussed.
文中主要描述了信号功率谱的计算和实现方法。
They obey normal distributions. Distributions of power spectral density (PSD) for pressure signal display narrower frequency range and higher amplitude.
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；
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.
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。
Because the probability density function of MQAM signal obeys L-S distribution, so it may construct the algorithm of discerning with L-S distribution.
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。
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.
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。
High speed switch design consists of many components, the density of PCB and the signal rate is very high. Accordingly the signal Integrity is very important.
对于高速交换机这种元器件较多，PC B密度大，且信号速率很高的设备，信号完整性问题至关重要。
A novel method named equivalent current density based on finite element method was developed for parametric variation problem of signal transmission caused by the external environment.
针对电信号的有效传输受外界环境引起自身参数变化的问题，提出了一种基于有限元方法求取传输参数的等效电流密度法。
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.
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。
The Du-conversion is one that converse the signal from time domain to gate-width domain and uses the wide spectrum density of the signal to show its characteristics.
杜氏变换是一种将信号从时域到门宽域的变换，用信号的宽谱密度来描述信号的特征。
These cysts showed particular low density and long T1 and long T2 abnormal signal intensity, but these cysts should become complex when accompanied by infection, operation or puncture.
以低密度和长t 1、长t 2信号为主，合并感染、手术或穿刺可使病变密度或信号变得复杂。
With same input signal to excite two systems, the results show that the power spectral density of the output can't identify non-minimum phase signal.
用相同的激励信号作用，结果显示，功率谱密度无法分辨非最小相位信号。
The function on signal amplitude density distribution is clearly defined.
明确给出了信号幅值密度分布函数的定义。
However, when the signal is a circularly band-limited, the minimum sampling density for a hexagonal sampling lattice is 13.
当连续图像信号的频带处于一个圆形区域之内时，正六边形点阵结构的采样密度比矩形点阵结构的采样密度要降低13。
We have derived the formulas of harmonic spontaneous emission power density, small signal gain of this undulator FEL and the coupling coefficients between the electrons and the radiation field.
导出了这种新型摇摆场结构自由电子激光高次谐波的自发辐射功率密度和小信号增益公式。以及电子与辐射场的耦合系数的表达式。
With the calculation results of number density, the small signal gain is calculated. Experimental results are compared with the theoretical results.
根据粒子数密度的计算结果，求解了小信号增益系数，并将该理论计算结果与实验结果进行了比较。
Substracting two signals can obtain signal proportional to density and after multiplication and evolution operations, an output signal proportional to mass flow can be obtained.
如果将二者输出的电信号相减，可得到跟密度成正比的信号，然后进行乘法与开方运算，即可得到跟质量流量成正比的输出信号。
Substracting two signals can obtain signal proportional to density and after multiplication and evolution operations, an output signal proportional to mass flow can be obtained.
如果将二者输出的电信号相减，可得到跟密度成正比的信号，然后进行乘法与开方运算，即可得到跟质量流量成正比的输出信号。
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