1) FM-PM signal
调频调相信号
1.
For the FM-PM signal, the Spectral Correlation method is used to recognise the PRBC-LFM signal and the PRBC-SFM signal.
针对调频调相信号,研究了基于谱相关的调制识别方法,仿真表明SNR > 6dB后,可以有效区分PRBC-LFM信号和PRBC-SFM信号。
2) twin-frequency adjustable phase generator
双频调相信号仪
1.
The deficiency of dual vibration composition with oscillograph is analized, BS- Ⅱ type of twin-frequency adjustable phase generator is designed.
指出了用示波器演示双振动合成的不足,设计了BS-Ⅱ型双频调相信号仪,并给出了应用该仪器获得 的部分实验图象。
3) FM signal
调频信号
1.
A demodulation method for narrowband multi-tone FM signal based on high-pass FIR filter in new type digitally coded track circuit system is proposed.
针对新型数字编码轨道电路传输的窄带多音调频信号,提出利用FIR高通数字滤波器进行多音调频信号数字解调的方法。
2.
By using moving one period sine wave model, the precise demodulation of FM signal wave is achieved.
在此基础上讨论实现正弦载波的调频信号的精确解调问题。
3.
The received FM signal is first downconverted to baseband using digital quadrature carriers generated by DDS.
本文提出了一种对调频信号进行数字解调的方法。
4) frequency modulated signal
调频信号
1.
Stochastic resonance of frequency modulated signals in a linear model of single-mode laser;
调频信号的单模激光线性模型随机共振
2.
(Theoretically),cyclic autocorrelation function of frequency modulated signal is deduced.
运用循环平稳分析理论,推导调频信号的循环自相关函数结果,并从理论上推导和分析了运用平方解调(或广义检波滤波解调)的方法实现对循环自相关函数的低频切片函数和高频切片函数进行解调的原理和方法,仿真验证理论推导正确,解调效果很好。
5) FM signals
调频信号
1.
This paper introduces the conception of cyclostationary signals and makes a detailed analysis of the cyclostationary properties of AM & FM signals in theory.
介绍了循环平稳信号的基本概念 ,对调幅和调频信号的循环平稳特性进行了详细的理论分析 ,计算机仿真实验也验证了分析得到的结果 ,即在一定条件下 ,调幅调频信号具有一阶和二阶循环平稳特性。
2.
In this paper,the chaotic FM signals are chose to be radar transmitted signals, the SAR imaging equation is obtained using time domain correlation technology.
提出了一种基于直接数字合成(DDS)技术的混沌调频信号生成方案,并将其用于合成孔径雷达(SAR)成像中。
6) frequency modulation signal
调频信号
1.
An adaptive algorithm for enhancement of multifold frequency modulation signals;
一种增强多种调频信号的自适应新算法
补充资料：调频
载波的瞬时频率按调制信号的变化而变，但振幅不变的调制方式。载波经调频后成为调频波。用调频波传送信号可避免幅度干扰的影响而提高通信质量。广泛应用在通信、调频立体声广播和电视中。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条