Relationship Analysis between PLL Phase Noise and PLL Bandwidth 锁相环相位噪声与环路带宽的关系分析
Some realization ways of measurement are discussed, including the maximum output power, output amplitude and noise bandwidth. 讨论了低频噪声源的最大输出功率、噪声输出幅度以及噪声带宽测试的实现途径。
Equivalent Noise Bandwidth of the Electro Hydraulic Servo System and Analysis of Its Accuracy 电-液伺服系统的等效噪声带宽及其精度分析
The avalanche photodiode detector is followed by a front-end amplifier and equalizer or filter to provide gain as well as linear signal processing and noise bandwidth redution. 前置放大器与均衡器或滤波器跟在雪崩二极管检测器的后面以获得增益,线性信号处理及噪声宽带的抑制。
Interactions among Instrument Bandpass, Instrument Noise, Sample-Absorber Bandwidth and Calibration Error 仪器的带通、噪声、样品-吸收体(absorber)带宽以及定标误差之间的互动关系
Simple and Practical Formulae of Noise Bandwidth for Sampled Phase-locked Loops 取样锁相环的实用噪声带宽公式
The extent of inventory fluctuating induced by different smoothing forecasting model can be measured by noise bandwidth, and the inventory fluctuating can be reduced by matched filtering. 通过噪声带宽分别衡量不同指数平滑预测模型引起供应链库存波动的程度,并且通过匹配滤波的方法可以减少不同预测模型引起供应链的波动性。
Realizing High Accurate Measurement by Simulation of the Equivalent Noise Bandwidth of Interferometer Phase-locked Loop 干涉仪锁相环等效噪声带宽高精度测量的仿真实现
An Analysis of Noise Bandwidth after Doubling the Signal Frequency 信号倍频后噪声频宽的分析
Measurement of Noise and Bandwidth of Semiconductor Lasers 半导体激光器的噪声和带宽的测量
The noise jammer using digital radio frequency memory ( DRFM) technology, has the features of high frequency spot accuracy, narrow noise bandwidth and high jamming power efficiency, is effective in jamming against pulse Doppler ( PD) radar. 采用数字射频存储器(DRFM)技术的噪声干扰机,具有瞄频精度高、噪声带宽窄、干扰功率利用率高的特点,可对脉冲多普勒(PD)雷达实施有效干扰。
This paper analyses the effect of noise bandwidth on rating system and explains in theory the selection of noise bandwidth for digital rating loop. 本文针对噪声带宽对测速系统指标的影响,对测速环路的噪声带宽选择作了详细的理论分析。
The log-ratio signal processor has properties of low noise, wide bandwidth and wide dynamic range, as well as good linearity response. 系统使用对数比电路完成位置信号处理,具有宽的动态范围和带宽以及好的线性度和稳定的运行性能,而且造价低廉,易实现。
Surface Acoustic Wave Voltage Controll Oscillator with Low Phase Noise Wide Frequency Bandwidth 宽频率带宽,低相位噪声声表面波压控振荡器
This paper proposes that using equivalent noise bandwidth evaluates noise error of the electro hydraulic servo system, analyses the accuracy of the position servo system, and obtains some expressions calculating various errors. 提出用等效噪声带宽来评价电-液伺服系统噪声误差的思想,并就位置伺服系统精度进行了分析,得出了计算各类误差的表达式。
The result shows that the receiver performance of BER is relevant to not only signal-to-noise ratio, but also input noise bandwidth and integration time. The characteristics can be applied to other kind of autocorrelation receivers. 表明该种接收机误码性能不仅与信噪比有关,而且与噪声输入带宽和积分时间有关,其特性可类推到其他类型的自相关接收机。
This paper discusses the modeling and simulation of interferometer phase-locked loop and its equivalent noise bandwidth through MATLAB software, and verifies the correctness and feasibility of realizing high accurate measurement with the equivalent noise bandwidth of interferometer phase-locked loop. 本文论述了通过MATLAB软件对干涉仪锁相环及其等效噪声带宽测量的建模和仿真,验证了实现干涉仪锁相环等效噪声带宽高精度测量的正确性和可行性。
Design of Low Noise Wide Bandwidth Low-Pass Filter 一种低噪声宽带低通有源滤波器的设计
New computing formulae for the discrete total square integral are derived by means of bilinear transformation. Simple and practical formulae of noise bandwidth for several main sampled phase-locked loops based on the integral expressions and the important relationship of the formulae are given. 本文应用双线性变换,导出了离散全方积分计算公式的新结果,并据以给出了几种主要取样锁相环的简单而实用的噪声带宽公式,以及这些公式之间的关系。
A circuit with lower noise, broader bandwidth ( up to video frequency) and higher gain for detecting and processing weak photo signals was developed. 本文自行设计,制作了一弱光信号检测与处理电路,该电路具有低噪声、宽频带(视频范围)、高增益等特点。实现了微弱信号的检测与处理。
Study on matching design methods based on signal to noise ratio bandwidth in photoelectric imaging system 基于信噪比通道宽度的光电成像系统匹配方法的研究
Finally, in order to decrease the error performances of whole system, the authors point oub that under the circumstances of intersymbol interference and additive Gaussian noise, the bandwidth ( double-side) of narrowband filter before demodulator is B ≈ 1.2/T_b. 最后,指出在存在码间干抗与加性高斯噪声的情况下,为减小系统的误码率,解调器前窄带滤波器的带宽(双边)B≈1.2/Tb。
Analysis of the loop stability and loop noise bandwidth of the APRX with the fractionally spaced equalization algorithm shows that the algorithm is more effective than the T-Spaced Equalizer. 此外,还分析了由于该并行均衡器的引入,对APRX环路稳定性、环路噪声带宽等性能所产生的影响。
The unit impulse response, transmission function and equivalent noise bandwidth of the system are deduced; 导出了系统的单位冲激响应、传输函数和等效噪声带宽;
In addition, the effects of sampling interval as well as noise unity bandwidth are discussed. 文中还讨论了取样间隔以及噪声的归一化带宽对系统性能的影响。
The emphasis is laid on the influence of the parameters of the active devices ( PIN photodiode, MESFET) on the circuit noise, transmission bandwidth and reception sensitivity of the preamplifier. 着重探讨了有源器件(PIN光电管、低噪声MESFET)的性能对前端的电路噪声、传输带宽与光接收灵敏度的影响,给出了相应的计算方法与计算结果。
The use of digital rating loop in Doppler radar always comes down to adjusting the noise bandwidth. 雷达多普勒测速系统采用数字测速环必然涉及到测速环路带宽调整问题。
Underwater acoustic channel experiences severe Multi-path extension, high ambient noise, limited bandwidth, large transmission and propagation delay, fluctuation effect and great doppler frequency shift. These features greatly reduce the reliability and effectiveness of underwater acoustic communication system. 水声信道具有多径扩展、高环境噪声、带宽受限、传输时延大、起伏效应和多普勒频移大等特点,这极大地制约了水声通信系统的可靠性和有效性。
For the past decades, the Optical Parametric Amplifier ( OPA) has attracted worldwide attention because of the potential for achieving high gain, low noise and large bandwidth. 近年来,由于光参量放大器(OPA)能实现高增益,低噪声及大带宽的信号放大而备受关注。
The digital Costas loop is realized, focusing on the design of the key parameters. The smaller the equivalent noise bandwidth of loop is, the longer the acquisition time lasts, but the better the anti-noise performance presents. 实现了Costas环的数字化设计,重点阐述了环路中重要参数的设计,环路等效噪声带宽越小,捕获时间越长,但抗噪性能越好,实际应用时要根据具体情况合理设计。