Additionally, the carrier loop noise bandwidth and the correlator spacing are reduced. Then the accuracy of carrier and code tracking loops is improved significantly.
同时，降低载波环噪声带宽，减小码环相关间隔，从而提高了载波环和码环的跟踪精度。
Many existing CO DSL modems may only support a relatively narrow receive frequency range, which will increase the difficulty of estimating the much wider bandwidth far-end loop noise.
许多已有的CO(中心局)dsl调制解调器可以只支持相对较窄的接收频率范围，这会增加估计宽的多的远端环路噪声的难度。
The effect of thermal noise and vehicle dynamics on carrier tracking loop are also analyzed, and the optimal bandwidth of carrier tracking loop is obtained.
并以相位跟踪环路为例分析了热噪声及载体动态性对环路的影响，得出了环路设计的最佳带宽。
It studies the noise mechanism and its impact on loop stability of PLL circuits and obtains some noise reductive measures, which have proved to be better.
研究了噪声的产生机制和对锁相环稳定性的影响，提出了减小噪声对锁相环性能影响的系列措施，实践证明，达到了较好的效果。
According to study the thermal noise generation of a towed loop antenna, the influence of the antenna's construction parameters on the thermal noise has been analyzed.
通过研究潜艇拖曳环天线的热噪声，分析了天线构造参数对热噪声性能的影响。
The possibility of using this kind of phase-locked loop under noise interference and the problems of filter design are discussed.
文中还讨论了在噪声作用下采用这种环路的可能性和滤波器的设计问题。
Furthermore, the working principle and phase noise of frequency-locked loop are analyzed and discussed in this paper.
给出了实验结果，并对锁频环的工作原理、相位噪声进行了分析和讨论。
Based on nonlinear loop models, quantitative analysis on noise performance and capture procedure of the DPLL is performed. The simulation results are in good accordance with the experimental data.
利用非线性环路模型对环路的噪声性能和捕捉过程进行了定量分析，仿真结果与实测数据吻合得较好。
Then presented the basic structure, phase model, frequency response and performance analysis for noise and spur, of phase locked loop (PLL).
然后介绍了锁相环(PLL)的基本结构、相位模型、频率响应、噪声及杂散性能。
There is an optimal loop gain to maximize the signal to noise ratio.
反馈环路存在着最佳增益使信噪比达到最大。
So noise analysis of loop filter is very important.
所以环路滤波器的噪声分析非常重要。
The key problem of the loose parts monitoring system for primary loop of pressurized water reactor is how to extract loose parts impact signal from complex background noise.
压水堆一回路松动件状态监测系统的关键环节在于如何从复杂背景噪声中提取松动件冲击信号。
In this article, PLL theory, design of loop filter and phase noise theory are introduced at first.
本文先介绍了锁相环的工作原理，环路滤波器的设计并对相位噪声的理论进行了阐述。
Then the influence of carrier frequency error on code loop and influence of code phase error on carrier loop in different noise are discussed in simulation.
利用计算机仿真方法详细分析不同噪声环境下，载波频差对码跟踪环路输出、码相位差对载波跟踪环路等因素的影响；
By predicting the noise in the loop the delay of noise signal in digital feedback loop is compensated effectively, thus the control capability of the system on disturbance is enhanced.
通过在回路中对噪声进行预测，有效地补偿了数字反馈回路造成的噪声信号的延迟，从而改善了系统的扰动控制性能。
This paper gives the design and experimental results of low noise NPLL frequency synthesizer and concludes that the passive loop filter is more suitable for low noise design than active loop filter.
介绍低相噪NPLL频率综合器的设计及实验结果。提出用无源环路滤波器比用有源环路滤波器更好，可获得低相噪设计。
With improved phase estimation method, a carrier signal phase with phase noise can be estimated, while loop SNR also increases.
并采用新的相位估计方式估计含相位噪声的载波相位，提升了该条件下的环路信噪比。
Noise which comes from both active and passive circuit element in loop filter will deteriorate phase noise of output signal.
环路滤波器中的有源和无源器件均有噪声产生，此类噪声会叠加在输出信号上，从而恶化输出信号的相位噪声。
A low reset noise CMOS image sensor (CIS) based on column-level feedback reset is proposed. A feedback loop was formed through an amplifier and a switch.
提出了一种通过放大器和开关建立起反馈环路，基于列级反馈复位的低噪声CMOS图像传感器(CIS)。
This paper discusses the despread of low signal to noise ratio of the direct sequence (DS) spread spectrum signals using intermediate-frequency recirculation summation loop (IFRSL).
本文讨论了用中频积累法实现低信噪比直接序列扩频信号的解扩。
Based on the lucubration of ADSL's transmission characters, the author concluded the main noise sources on the loop and their influences to the ADSL's transmission performance.
本文作者在深入了解ADSL传输特点的基础上，总结了线路上主要噪声源的特点及其对ADSL传输性能的影响。
If C/N0 was increased, the noise would decrease, contrariwise noise will increase, and the noise will exceed the threshold, then the loop will be lost.
如果C/N0增大，热噪声会相应下降，反之，热噪声会随之增大，从而可能会超出门限值，使跟踪环失锁。
This paper gives a particular introduction about comparing circuit, and presents the reasons why the open-loop comparing circuit could not operate stably in a condition full of high-speed noise.
本文详细介绍了比较电路工作特点，分析了开环比较电路在高频噪声干扰环境中不稳定工作的原因。
Finally, the table of the optimal loop parameter values under different signal-to-noise ratios is presented.
最后，给出了在不同信噪比下的最佳环路参数表。
By analyzing the output spectra of former configurations, a problem was indicated, and an improved loop structure to eliminate the background noise was proposed.
通过对文献中报道的环形腔结构光纤激光器输出的分析，指出了其存在的问题，并提出了减小其输出背景噪声的改进方案。
Air and other non-condensable gas inside the water pipe will cause a lot of problems, such as noise, corrosion, hysteresis loop, and even cause a temporary interruption of the device.
给水管道内的空气及其它不凝性气体会引起很多问题，如噪音、腐蚀、循环迟滞，甚至造成设备的暂时中断。
Another factor could be the high Q of my loop acting as a filter for more broad band noise.
另一个因素可能是高q值作为我的环路滤波器的更多的宽带噪声。
The invention relates to a double-loop frequency synthesizer and a phase noise analyzing method.
一种双环路频率综合器及其相位噪声分析方法。
The invention relates to a double-loop frequency synthesizer and a phase noise analyzing method.
一种双环路频率综合器及其相位噪声分析方法。
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