背景噪声

In view of this, some new signal processing methods are studied for radio fuze target detection.

为使无线电引信在强背景噪声干扰的情况下能够正确地识别目标，就需要采取有效的信号处理方法识别目标。

According to the difference of Doppler spectra of meteor trail echo and clutter of ground and sea,a FIR high-pass filter is designed to filter out clutter and so the meteor trail echo becomes obvious.

该文根据地海杂波与流星干扰在多普勒谱上的差别，提出了用FIR型高通滤波器滤除杂波使流星干扰凸显出来；再根据流星干扰的分布特点分段计算背景噪声均值，求取流星干扰检测门限；最后用杂波信号来插值流星干扰位置上的数据，消除因去除干扰造成的杂波相位不连续。

According to the difference of Doppler spectra of meteor trail echo and clutter of ground and sea, a FIR high-pass filter is designed to filter out clutter and so the meteor trail echo becomes obvious. Then a smart threshold is obtained from the minimum mean of different segments of background noise and used to detect the meteor trail echo. Finally the phase discontinuity of clutter from the meteor trail echo suppression is eliminated by substituting the data at echo positions with clatter.

该文根据地海杂波与流星干扰在多普勒谱上的差别，提出了用FIR型高通滤波器滤除杂波使流星干扰凸显出来；再根据流星干扰的分布特点分段计算背景噪声均值，求取流星干扰检测门限；最后用杂波信号来插值流星干扰位置上的数据，消除因去除干扰造成的杂波相位不连续。

The theoretical analysis and the result of the experiment indicate that this algorithm compared with other algorithms,such as homomorphism filter and gray equalize,which can effectively enhance contrast,control the context and noise.

理论分析和实验结果表明，该算法与同态滤波、直方图均衡化等算法相比，有效地增强了对比度、抑制了背景噪声。

A TV target tracing system has following features: real-time, image indistinctness on the ground of dynamic tracing and external environmental distortion, high n...

电视目标跟踪系统实时性强，由于是动态跟踪和外界环境干扰，所以导致图像不清晰、背景噪声较强。

Noise in the background can make it hard for your interlocutor to hear what you are saying.

背景噪声使对方难以听清你到底在说什么时，提高话音也就难以避免了。

The experimental verification was accomplished.The whole system wassuccessfully applied to detect the fluorescent dye: Rhodamine B and Fluorescein,with certain sensitivity and linearity. The "light trap" structure has proved effective inreducing the background noise to some extent.

进行了实验验证工作：将构建的检测系统用于对荧光染料罗丹明B以及荧光素的检测，达到了一定的检测限以及线性度，并且验证了"光阱"结构能够在一定程度上降低背景噪声。

Most current seg-mentation and tracking algorithms are of high complexity but not effective in getting rid of background noise. One algorithm is put forward to segment and trace video objects based on edge difference among multiple frames.

针对目前大部分视频对象分割和追踪算法相当复杂但仍不能有效地去除背景噪声的问题，该文提出用于分割和跟踪视频运动对象的一种基于多帧边缘差异的算法。

This method realized real-time deducting background noise and improved measuring sensitivity, is of one order of magnitude.

实现了测量系统对背景噪声的实时扣除，使系统的测量灵敏度约提高了一个量级。

The accurate transmitted time of sound wave in acoustic pyrometry has the vital significance.But it possibly enables the background noise to change when the boiler under the different capacity,the different load,and the different time.

准确的声波飞渡时间在声学测温中具有非常重要的意义，但是不同容量、不同负荷、不同时刻下运行的锅炉都可能使得背景噪声发生变化。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。