频谱

The absolute summability of autocorrelation sequence imposes only the continuity constraint on the power spectrum.

另外，绝对可加性自相关数列之假设只是意指在中必须连续。

Howard Pattee, an early cybernetician, defined hierarchical structure as a spectrum of connectance.

早期控制论专家霍华德·派蒂将层次结构定义为一个连接性。

The paper has introduced a kind of distortion factor analyser for sinusoidalsignal based on virtual instrument technology.

分析法是目前信号失真度测量常用方法,但谐波分析泄露问题会严重影响测量精度。

The feature of optical fiber transmission system and its effect on the solar radio heliograph are analyzed in this article.

摘要分析了光纤传输系统特性，及其对太阳射电日像仪影响。

Use the Frequency Spectrum (FFT) display to measure the approximate value of the fundamental frequency of the wire on the Sonometer.

用（FFT）显示测量振动率计上金属丝基近似值。

For general exploringobjects requirement, narrow pulse signal with tens millimicro second to millimicrosecond has the frequency spectrum from DC to thousands MHz.

按照对地目标探测一般需要,通常采用到量级电磁探测窄脉冲,信号具有从直流低直到千兆赫兹宽带。

This paper presents a new frequency domain deghosting method on the basis of analyzing both the ghost formation mechanism and its filter spectrum characteristics.

在分析了虚反射形成机制及其滤波器特性基础上,提出了一种在率域剔除地震鬼波新方法。

The MDUPC only needs the local information to coordinate intercell interference and achieves the best tradeoff between the fairness of users and the spectral efficiency.

该算法中每个小区只需本地信息就可以协调小区间干扰，实现了用户间公平性与利用率最佳折中。

Texture unit and texture spectrum can get the difference of the microtexture and the macrotexture of this two regions effectively so as to detect the target.

而纹理单元及其函数纹理则分别能有效地捕获这两个区域在微纹理及宏纹理上差异，从而检测出弱目标。

In order to study laryngeal phonic function,the methods of acoustic evaluation and phonatory detection has become the focused problem by doctors in otorhinolaryngology and speech pathology.

电子计算机嗓音测试及分析已成为嗓音客观检查重要手段。其测试参数为喉部疾病诊断、疗效评价主要指标。