讨论了消除欠采样噪声的途径。
基于信息理论评价系统,优化系统设计,控制欠采样噪声。
System assessment, system optimizing designs and aliasing noise control all can be done based on information rate.
受传输带宽限制,网络视频采集系统的采样率低,欠采样噪声严重。
Signal sampling system of video communication over network usually has a low sampling rate suffering from the limited bandwidth, so aliasing noise is big problem.
欠采样噪声产生分布于整个画面的小尺寸附加像,给目标识别等应用带来困难。
The small scale artifacts generated by aliasing noise existing everywhere in an image, bring difficulties to some applications, such as target identification.
比较器热噪声或者其它非采样噪声源的结果可能使得比较器14做出错误的判定。
The result of comparator thermal noise or other non-sampled noise source may make the comparator 14 make the wrong decision.
当白噪声干扰方向控制器时,可以用采样数据建立时间序列的自回归模型。
When a white noise interferes with the controller, a time series autoregressive (AR) model is built using the sampled experimental data.
将噪声添加到海拔和湿度图会导致在区域过度附近产生“抖动”。使用噪声在坐标附近采样会扭曲形状的边缘。
Adding noise to the elevation and moisture will produce "dithering" in the zones near transitions. Sampling nearby points using noise will distort the shapes of the boundaries.
实验分析可以看出,算法对各种常用的内容保留操作(重采样、高斯白噪声、压缩等)具有较强的鲁棒性,而对恶意篡改非常敏感。
Experiments show that the algorithm is robust against several operations, such as resampling, white noise addition, compression and so on, and is sensitive to malicious tampering.
简单的线性模型可以用来分析过采样和噪声整形的特性,也可以在大量仿真做支持的情况下,用来作为设计的近似模型。
Simple linear quantizer model can be used to analysis over sampling and noise shaping, and can be used to design modulator based on large amount of simulation, too.
其次,在考虑系统噪声和延时可以大于一个采样周期的情况下,提出了单包传输和多包传输的网络控制系统的模型。
Secondly, the model of NCS with single-packet and multiple-packet transmission under considering system noise and network-induced delay longer than one sampling are proposed.
在考虑系统噪声和网络诱导延时大于一个采样周期的情况下,给出了多包传输的网络控制系统模型。
The model of NCS with multiple-packet transmission is presented considering system noise and network-induced delay longer than one sampling period.
该滤波器通过处理输入离散采样信号获得连续信号并抑制谐波噪声,改进了过零测频方法。
The filter processes input discrete sampling signal to recover continuous signal and suppress harmonic noise, and the zero-crossing frequency measuring method is improved.
在系统的内部实现了相关双次采样电路,有效地抑制了固定噪声。
The correlated double sampling circuits are realized in the inner system, the circuits can effectively reduce fixed pattern noise.
考虑低空传播以及直接采样系统中adc器件的噪声,分析了低空探测时影响观测范围的主要因素。
The propagation at low altitudes and the ADC noise in the RF direct sampling system taken are considered, and the main factors which affect the coverage of low altitude detection is analyzed.
注5:在SDA和SCL输入滤波器抑制噪声尖峰的采样时间和延误。
Note 5: a filter on the SDA and SCL inputs suppresses noise spikes and delays the sampling instant.
当白噪声干扰电流变传动器时,利用采样数据,建立时间序列的自回归模型。
When a white noise interferes with the device, a time series model, proposed as AR (autoregressive) model, is conducted by using the sampled experimental data.
首先,为了去除测量产生的噪声和误差,引入高斯核函数为每个采样点加权;
To filter out the noise and error arising out of various physical measurement processes and limitations of the acquisition technology, a Gaussian weight is assigned to each point acquired.
煤与瓦斯突出前有征兆显现——煤体声发射,然而实际采样到的煤体声发射信号往往含有许多噪声,严重影响了预测可靠性。
There is a sign before coal and gas outburst-acoustic emission, but a lot of noise included in acoustic emission affects reliability of prediction severely.
结合KTC噪声特性,对相关双采样电路进行了详细分析。
According to the characteristic of KTC noise, the correlated double sampling circuit is particularly analyzed.
同时研究了噪声对关联维数计算结果的影响,并提出用采样迭代奇异值降噪算法对原始数据进行降噪处理。
The influence of noise on the computational precision of correlation dimension is discussed, and iterative singular value decomposition for reducing noise is introduced.
文中分析了三种抑制噪声的方法,相关双采样法、双斜积分法、开关指数滤波法。
Signal processing schemes described in this paper are double correlated sampling, dual slope integration and switched exponential filtering.
利用线性系统理论和采样理论对成像系统的传递函数进行了分析建模;借助于三维噪声模型表征了系统的噪声特性。
The transfer function of imaging system is modeled using the linear system theory and sampling theory, and the noise is characterized with the three-dimensional noise model.
研究了采用带通采样的方法,实现HF雷达噪声频谱在线监测的原理,以及频谱监测的波形设计和系统实现。
In this paper, an online inspecting scheme of noise is introduced by employing the band sampling method, and the design of wave shape and the implementation of HF radar system are presented.
随着采样频率和A/D变换器位数的增加,时钟抖动和相位噪声对数据采集系统性能的影响更加显著。
The effect of clock jitter and phase noise on data acquisition system performance is more profound as the increase of sampling frequency and the bit of A/D converter.
在一个采样时间不固定,且采样信号带有噪声的应用实例中,采用变步长的跟踪微分器加预报的方法得到了较好的结果。
In a practical example, a good result is obtained by the adoption of step-varying TD and predicting under the condition of sampled signal with noise and sampled time varying.
通过软件,设计了一种不固定点采样方法,从而避免了开关通断时的开关噪声产生干扰。
A non-fixed point sampling method is designed to avoid switching noise interference produced when the switch is on or off.
辨识精度与算法中拟合模型阶数、采样时间间隔和采样总数有关,并受信号中噪声的影响,需加以改进。
The identification accuracy is related to the order of the fitting model, sample interval and sample number, and also affected by signal noise, which shows the method should be improved.
在这个基础上,通过获取上百次直流输入信号的采样,来测量转换器的均方根噪声。
On the bench, you can measure your converter's rms noise by acquiring a few hundred samples of a dc-input signal.
在这个基础上,通过获取上百次直流输入信号的采样,来测量转换器的均方根噪声。
On the bench, you can measure your converter's rms noise by acquiring a few hundred samples of a dc-input signal.
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