quantization noise
英
美
网络 量化噪声; 量化噪音; 量化误差; 量化杂讯
双语例句
- This paper focuses on the influence of quantization noise in MRC combining in Rayleigh Flat-fading channel.
文中主要研究瑞利平衰落信道下量化噪声对最大比合并（MRC）接收分集合并输出信噪比的影响。 - The speed measurement method by combining tachogenerator and photoelectric encoder was proposed for decreasing quantization noise of the photoelectric encoder.
设计了采用测速发电机和光电码盘组合的测速方法，用以消除码盘的量化噪声； - Influence of quantization noise on harmonic analysis via interpolated fast Fourier transform
量化噪声对插值FastFouriertransform谐波估计的影响 - There are the phase truncation spurs and amplitude quantization noise specially in the DDS's.
幅度量化及相位截取引入的杂散是DDS固有的噪声。 - The performance evaluation in signal domain of this BAQ algorithm based on signal to quantization noise ratio ( SQNR) and RMS phase error is presented and the processed SAR image after encoding/ decoding with this BAQ algorithm is given.
文中给出了算法在信号域内的信号对量化噪声比（RSQN）和均方根相位误差这两个性能指标的评估结果；并给出了SAR原始数据经BAQ处理后的成像结果； - The theoretical formula of output signal-to-noise ratio involving quantization noise and round-off noise are derived.
推导了包括量化噪声和截断噪声的输出信噪比的理论公式。 - Quantization Noise Analysis in Linear Phase Frequency Sampling FIR Filters
线性相位频率取样FIR滤波器量化误差的分析 - As we all known that the angle random walk, bias instability, rate random walk, rate ramp, quantization noise, Markov noise and sinusoidal noise may have an effect on the performance of fiber optic gyro.
影响光纤陀螺性能的噪声因素是很多的，诸如角度随机游走、零偏稳定性、速率随机游走、速率斜坡、量化噪声、马尔可夫噪声以及正弦噪声等； - But the most common noise is angle random walk, bias instability, rate random walk, rate ramp and quantization noise.
但常见的噪声因素通常包括五项：角度随机游走、零偏稳定性、速率随机游走、速率斜坡和量化噪声； - Quantization noise analysis of linear phase frequency sampling FIR filters was discussed, and computation formula for measuring quantization noise was described in this paper.
主要分析了线性相位频率采样FIR滤波器中的量化噪声，并给出计算公式。 - As the referenced frequency is fixed, the output frequency, the phase quantization noise and the resolution of frequency and phase are due to frequency word, the value of ROM and the bits of D/ A converter, the bits of accumulator and ROM respectively.
时钟频率给定后，输出信号的频率取决于频率控制字，频率分辨率取决于累加器位数，相位分辨率取决于ROM的地址线位数，幅度量化噪声取决于ROM的数据位字长和D/A转换器位数。 - Quantization noise from fixed-point processing and limited word length storage affect real-time imaging and system miniaturization in spaceborne synthetic aperture radar ( SAR) imaging processors.
为了实现星载合成孔径雷达（syntheticApertureRadar，SAR）成像处理器小型化和实时信号处理，该文重点研究定点运算和有限字长存储引入的量化噪声。 - The Controller Influenced by Quantization Noise in Computer Control System
在计算机控制系统中量化噪声对控制器的影响 - In digital closed-loop fiber optic gyroscope, AD converter is used to translate analog input into digital signal. Quantization noise in AD conversion will influence bias stability of FOG.
数字闭环光纤陀螺中，采用AD转换器将模拟信号转换为数字信号，AD转换中的量化噪声将直接影响光纤陀螺的零漂指标。 - The strength of the embedded watermark is image-adaptive according to the wavelets quantization noise, and combined with the error-correct code, it improved the characteristic to anti-attack.
根据小波域量化噪声自适应地确定嵌入强度，并结合纠错编码，提高了抗攻击能力。 - On the basis of the distortion/ aliasing functions, quantization noise of hybrid filter bank ADCs is studied with polyphase structure of its synthetic filter bank in detail.
利用混合滤波器组ADC系统之综合滤波器组的多相结构，对混合滤波器组ADC系统量化噪声进行了详细研究。 - All analysis of quantization noise for single-loop Δ-Σ modulator for the fractional-N frequency synthesizer is based on linearization assumptions.
以往对小数分频频率合成器中的Δ-∑调制器的量化噪声大都建立在线性分析的基础上，这样得出的量化噪声近似为高斯噪声。 - WLP technique is employed to construct a pre-and post-filter, where the pre-filter could reduce the pre-echo resulting from MDCT coding and the post-filter is used to shape the quantization noise spectrum so that the subjective perceptual quality of reconstructed audio signal can be improved.
WLP技术用来构造一对前滤波器和后滤波器，其中前滤波器用来降低MDCT编码过程中前回声的产生，后滤波器可以对量化噪声进行整形，从而进一步提高重建音频的主观听觉质量。 - In this paper, a fast encoding algorithm that does not enhance quantization noise is introduced.
作者在该文中提出了一种不增加量化噪声的快速编码算法。 - This paper analyses colour subcarrier quantization noise in PCM coding of complete television singal. The relationship between quantization noise and sampling frequency ( f s) as well as quantizing bit number ( n) is discussed.
分析了全电视信号PCM编码色度副载波量化噪声，并讨论了量化噪声与取样频率fs和量化比特数n的关系。 - But the most common noise is angle random walk, bias instability, rate random walk, rate ramp and quantization noise. In this paper, the random error model including the most common five noise as above.
对常见的五种噪声因素包括角度随机游走、零偏稳定性、速率随机游走、速率斜坡和量化噪声建立了陀螺随机误差模型。 - As we know, Σ-Δ modulation technique has the advantage of suppressing the low frequency quantization noise, so it is frequently applied in the modulation circuit of class D.
众所周知，∑-Δ调制技术由于其具有抑制低频量化噪声的优点，因此在D类放大器的调制电路中得到广泛应用。 - An analysis of quantization noise in FM transmitter at intermediate offset frequencies
对调频发射机在中频偏移下的量化噪声分析 - The results indicate that, after filtering both the quantization noise and the random walk coefficients of FOG can be weakened by about 60%, and the bias stability can be further improved.
结果显示，滤波之后陀螺的量化噪声和随机游走均减小了60%左右，零偏稳定性得到进一步的提高。 - Therefore, we use quantization noise factor to fix the time domain matching criteria which reduces the influence of lossy compression coding.
所以，本文引入量化噪声影响因子来修正时间域匹配准则，从而降低视频有损压缩编码对检测结果的不良影响。 - Over-sampling ADCs reduce quantization noise power in the baseband ( Especially when sampling frequency is greatly larger than baseband frequency), and improve the base-band signal to noise ratio, to increase the resolution of the converter.
过采样ADC通过过采样技术，将基带中的量化噪声功率降低（特别是当采样频率比基带频率大很多时），提高了基带内的信噪比，达到了增加转换器的有效量化位数的目的。 - In the stage of image preprocessing, the image quantization noise is eliminated and the correlation between adjacent pixels is improved effectively by using the low-pass filter base on templates of 3D Gaussian smoothing.
在图像预处理阶段，采用3D平滑高斯模板进行低通滤波，有效地消除了图像的量化噪声，提高了相邻像素的相关性。 - As the core of Sigma-Delta ADC, Sigma-Delta Modulator employs oversampling and noise shaping technology to effectively suppress the signal-band quantization noise, so as to improve the performance of the modulator.
Sigma-Delta调制器作为Sigma-Delta模数转换器的核心，采用过采样技术和噪声整形技术有效地抑制了信号带内的量化噪声，从而达到提高调制器性能的目的。 - The frequency characteristics of the cascaded integrator comb ( CIC) filter was analyzed, with appropriate structure and order determined. The sampling frequency of the input signal decreased 16 times, and the quantization noise at high frequency was attenuated.
对级联积分滤波器（CIC）的频率特性进行了分析，选择了适当的结构与阶数，实现对输入信号的采样频率下降16倍、衰减了高频处的量化噪声。 - Conventional Nyquist Analog-to-digital converters require precise analog circuits. In contrast, oversampling converters use oversampling technique, make the quantization noise power small in baseband, increase the SNR in baseband and achieve the more ENOB.
传统的奈奎斯特模数转换器要求模拟电路具有高精度。相反，过采样ADC利用过采样技术，降低基带中量化噪声的功率，提高内部通带的信噪比，实现使转换器增加有效量化位数的目标。