一次解调中研究了频谱分离法和锁相法两种实现鉴频的技术。
We have mainly researched two FM signal demodulation techniques called Frequency Spectrum Separation and Phase Lock Loop in the first part.
同时，其鉴频鉴相算法表达式简单，易于用可编程数字器件实现。
The frequency and phase detection module is very easy to realize by programmable digital devices.
以紫外荧光灯为光源，结合调频和鉴频技术可实现低速率下的紫外通信。
Using ultraviolet fluorescent lamp as the light source, combining frequency modulation and demodulation technology can achieve a UV communication system with low date rates.
结果表明，这种鉴频器不但具有较大的频率捕捉范围，而且非常易于实现。
As the result shows, using the proposed detector, not only the range of frequency being captured can be widen, but it is easy to be implemented.
本文介绍用于水轮机调速系统中的A-D-A型数字鉴频器的输入电路和抗干扰措施。
This paper describes the input circuit and anti-interference measures of A-D-A type digital frequency discriminator used in the speed governing system of hydraulic turbines.
针对传统接收机中模拟鉴频方法的缺点，提出了一种基于分布式算法的数字鉴频方法。
Aiming at the disadvantages of analog frequency estimation in traditional receiver, this article proposes an algorithm of digital frequency discrimination based on distributed arithmetic.
以日本村田公司的两个新产品为例，分别介绍了陶瓷滤波器和陶瓷鉴频器的新特性及其应用。
This article introduces the new characteristics and applications of the piezoelectric ceramic filter and discriminator by two new products made from the Murata Manufacturing of Japan.
详细分析雷达接收机中鉴频器的作用，进行理论分析和电路设计，并给出具体电路和调试要领。
The paper details the USES of phase detection discriminator in radar receiver, describes the theoretical analysis and circuit design, and gives out the practical circuit and test requirements.
分析了集成峰值鉴频器的工作原理，得出鉴频中周失谐的原因是内置的配谐瓷管电容容量的衰减。
Through the analyses on the principle of integrated peak discriminator, it is found that the reason of disharmony of discriminator is due to the decrease of the capacity of oscillator.
本文主要研究CMMB系统应用的小数分频PLL以及系统中高性能的鉴频鉴相器和电荷泵的实现。
The main aim of this work is to research the fractional-N PLL in the CMMB application and the realization of the high performance PFD and CP of the PLL.
对常用的叉积自动频率跟踪环（CPAFC）进行了改进，改进后的鉴频算法具有更快的捕获速度。
This article has made the improvement to CPAFC which be commonly used. After the improvement frequency discrimination algorithm has the quicker capture speed.
提出了降低本振附加的fm噪声，减小系统的鉴频效应，使整机的附加噪声得以有效抑制的改进措施。
The methods to minimize the extra FM noise of LO and the discrimination effect are proposed so that the additional receiver noise can be effectively repressed.
借鉴频度统计、专家调查和理论分析，建构了一套较为合理的指标体系，为下一步的评价分析提供依据。
With frequency statistics, experts survey and theoretical analysis, a reasonable evaluation system was established, which provided scientific basis for analysis and evaluation.
利用鉴频原理设计了一种无线多功能多路远程影像播控系统，介绍了采用的主要技术措施及实现的主要技术指标。
In this paper a distant image play-out system designed with the principle of frequency discrimination, main technical measures and main technical specifications are described.
根据所得到的鉴频特性分析和讨论了信号诸参数对鉴频特性的影响，并且给出了这种数字卷积测频算法的测频精度。
The influence of signal's parameters on frequency-discrimination characteristics is analyzed and discussed, and the precision of the convolution frequency discrimination algorithm is given.
然后讨论了差分鉴频的方法，特别是对低数据率情况下的差分鉴频进行了探讨，并给出了一种实用的数字鉴频结构。
Then the differential frequency discrimination method, especially at slow data rates, is discussed while a practical structures of differential frequency discrimination is given.
进而研究根据CPT谱线实现原子钟锁频的数学过程，并通过对激光调制过程中物理鉴频系统的信号流分析得到物理系统的鉴频模型。
The method for locking frequency according to CPT line is studied. The model of frequency detection for physical package is attained according to analysis the course of detection.
鉴别器，鉴频器：一种将输入信号的某一特征，如频率或相位转变为幅度变化装置，其变化大小因信号与标准或参考信号的不同程度而异。
Discriminator: a device that converts a property of an input signal such as frequency or phase into an amplitude variation depending on how the signal differs from a standard or reference signal.
本文简述了改制后的PTY - 8鉴频器各部分的工作原理及其主要技术指标，给出了仪器标定和试验结果，并介绍了其与原pty - 8鉴频器相比所具有的优越性。
This paper presents the main technological indicator and working principle of the new instrument, the results of instrument calibration and test, and the advantage over the old instrument.
以我们对铯原子法拉第反常色散原子滤光器(FADOF)的研究为基础，结合其它FADOF的研究成果，介绍了FADOF的原理、特性、以及在滤波、鉴频、磁光调制等方面的应用。
Based on our and other's study on Faraday anomalous dispersion optical filter (FADOF), the principle, structure, property and various application of FADOF will be discussed in this paper.
以我们对铯原子法拉第反常色散原子滤光器(FADOF)的研究为基础，结合其它FADOF的研究成果，介绍了FADOF的原理、特性、以及在滤波、鉴频、磁光调制等方面的应用。
Based on our and other's study on Faraday anomalous dispersion optical filter (FADOF), the principle, structure, property and various application of FADOF will be discussed in this paper.
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