This paper describes some methods, steps and attentions using a spectrum analyzer in phase noise measurement.
本文叙述了用频谱分析仪测量相位噪声的方法,步骤和应注意的问题。
The comparison method in phase noise measurement system is introduced by means of the advanced way in interlaboratory comparison and proficiency testing.
通过采用国际上先进的实验室比对和能力验证方法,提出了相位噪声测试系统的比对方案。
In addition to high power, the amplifiers also provide improved performance due to very low phase noise and spurious.
除了大功率,由于低相噪和低杂散,该放大器也提供改进的性能。
Due to the frequency pulling of FLL, the passband of the filter in PLL can be made very narrow to suppress the noise, and the PLL can lock carrier's phase with high accuracy.
由于有锁频环的频率牵引,锁相环路滤波器可以设计得很窄,具有很好的抑噪性能,满足精确跟踪载波相位的要求。
In this thesis, we brought out an effective method capable of raising maximum oscillation frequency with good phase noise.
在本论文中,我们提出了一个有效的方式把振荡频率提高且有不错的杂讯表现。
The method can realize time variant merging automatically, result in simultaneous corrections both for phase and amplitude and avoid the influence of noise.
此方法可自动实现时变拼接,达到相位和振幅同时校正,而且能避免噪声的影响。
Low noise fixture and phase average technique provide the amplitude and spurious resonance in frequency domain.
在频率域内,低噪声定位装置和相位平均技术可以提供振幅和假频谐振。
The LO phase noise, LO-RF port isolation of the mixer in the front-end and their effect on the detectability of the radiometer were analyzed in this paper.
分析了前端部件中本振源相位噪声和混频器本振射频端口隔离度对系统探测性能的影响,指出在距离较近时影响明显。
In this paper, influence of SAW linear FM signal phase noise on radar transmitter is analyzed.
本文研究了SA W线性调频信号的相位噪声对雷达发射机性能的影响。
The paper presents design proposal. working principle and functions of the signal processing system in the phase noise calibrating system 'for the pulse power amplification chain.
详细介绍了在脉冲功率放大链相位噪声检定系统中的信号处理系统的设计方案、工作原理及功能。
In modern radar and communication system, phase noise of local oscillator (lo) becomes a vital factor of system performance.
在现代雷达和通讯系统中,本振相位噪声越来越成为决定系统性能的关键因素。
Therefore a new method of Kalman Filters used in phase unwrapping and noise restraining is proposed.
并提出了卡尔曼滤波在相位解缠与噪声抑制中的一种新算法。
The analyses of frequency characteristic of the system demonstrate that the noise in effective frequency band is eliminated and the phase of the system is approximately linear.
并对系统的频率特性进行了分析,表明基于该技术的微加速度计系统在工作频段内噪声能够得到有效的消除,且具有近似的线性相位。
Regenerative dividers play an important role in frequency synthesizer with its low phase noise.
再生分频器以其优越的相位噪声性能,在频率合成中有着重要作用。
Noise filtering for interferometric phase image, is one of key problems in InSAR imaging.
干涉相位图的降噪滤波,是干涉合成孔径雷达成像中必须的步骤之一。
Many factors, such as noise, speckles and low modulation in wrapped phase make the unwrapping procedure complicated and path-dependent.
实际干涉计量中各种干扰因素的存在,使得包裹相位图中可能存在噪声、低调制点或散斑等误差点。
The shot noise and thermal noise with homodyne demodulation technique is given in this article. And phase noise induced with different time delay is also analyzed.
给出了采用零差解调技术时干涉系统的散粒噪声和热噪声,并且分析了在不同时间延迟情况下的相位噪声。
The paper analyzes the interference rejection of Quadrature amplitude modulation signals in the presence of carrier phase jitter, sinusoidal interference and white Gaussian noise.
文章分析了存在载波相位起伏、正弦干扰、高斯白噪声时正交调幅数字系统的抗扰性。
Computer simulation and experimental results make it clear that this method can effectively remove noise in phase map, unwrap the wrapped phase, and reconstruct the surface of the detected object.
计算机模拟和实验结果均证明,此方法能有效地去除相位图中的噪声,实现带噪声的主值相位图的相位展开,可靠地重建被测物体的表面形貌。
In this paper the phase noise is introduced from phase control at first, then the phase noise is analyzed and given a new solution to the vector of it.
先从相位控制出发导出相位噪声,并就相位噪声进行了分析,给出了相位噪声矢量的一种新的求法。
On the research of traditional phase noise measurement methods, a new phase processing and phase noise measurement method based on Equivalent phase Comparison Frequency is proposed in this paper.
本论文在对传统相位噪声测量方法研究的基础上,提出了基于等效鉴相频率的相位处理和相位噪声的测量。
A fast agile frequency synthesis source of low spurious and low phase noise is presented in the article.
文中介绍一种低杂散、低相噪、快速捷变频频综源的实现途径。
Phase noise in semiconductor laser due to external optical feedback is investigated theoretically.
本文在理论上研究了由于外部光反馈引起的半导体激光器的相位噪声。
A noise reduction method in nonlinear time series based on phase reconstruction and manifold learning was proposed.
提出了一种基于相重构和主流形识别的非线性时间序列降噪方法。
For the problem of the parameter estimation of multi-component chirp signal in the additive colored noise, a method based on phase difference and time-frequency signal filter was proposed.
针对加性色噪声背景下的多分量线性调频信号参量估计问题,提出了基于相位差分的时频子空间方法。
A new method is presented for analyzing the acquisition behavior of second-order PLL with sinusoidal phase detector in the absence of noise.
本文给出了一种计算无噪声时具有正弦鉴相器的二阶锁相环捕捉特性的新方法,求得了每个差频周期的平均角频率牵引量。
The phase noise is in close relationship with the performance of system, for this reason, the low phase noise source is widely used in system to optimize its performance.
源的相位噪声指标和系统的灵敏度密切相关,而灵敏度是许多高性能系统的关键指标之一,所以低相噪源在高性能系统中被广泛采用。
The SSB phase noise and timing jitter are further analyzed in this experiment.
在这实验,相位杂讯和时序抖动被进一步做分析。
The SSB phase noise and timing jitter are further analyzed in this experiment.
在这实验,相位杂讯和时序抖动被进一步做分析。
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