This paper presents a method of digital frequency discrimination based on CORDIC ( Coordinate Rotation Digital Computer) algorithm which is suitable to be implemented in FPGA. 本文介绍了多基线测向算法,对其解模糊原理及范围作了深入分析,并给出了常见宽带信号的数字鉴相算法。
In this paper we zoom some regions of FFT spectrum by the Fourier transform, get the precise value of some main frequency, and thus greatly improve the frequency discrimination of FFT spectrum. 在细化频谱分析时,可以得到某个主要频率成份频率、幅值、相位的精确值,极大地提高了频率分辨力,对瞬态及恒定采样长度信号的频率细化分析十分有效。
Research on the System of Wind Lidar Based on Frequency Discrimination by Angle-Tuned F-P Etalon 角度调谐F-P标准具鉴频的测风激光雷达系统研究
Then the differential frequency discrimination method, especially at slow data rates, is discussed while a practical structures of differential frequency discrimination 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。
Due to low frequency discrimination, FFT can't be effectively used to analyze the frequency components and spectrum characteristics of vibration signal of circuit breaker operating mechanism. Thus the application of zoom spectrum analysis to operation vibration test is presented and discussed. 由于频率分辨率较低,基带FFT难以有效地分析断路器操动机构振动信号的频率结构和频谱特征,文中探讨将选带细化频谱分析技术应用于振动信号的分析。
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. 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。
A Convolution Frequency Discrimination Algorithm with Amplitude Compensation for Linear Frequency Modulation Signals 具有幅度补偿的线性调频信号的卷积测频算法
This paper introduces an equalization algorithm for the frequency-modulation signal on the basis of an algorithm for the GMSK signal of using FFT to detect the burst and estimate the offset of the symbol timing after frequency discrimination. 针对GMSK信号的一种基于鉴频以后利用FFT变换来进行突发检测和时偏估计的算法,介绍了一种适用于调频信号的均衡方法。
Frequency Discrimination of Pure and Complex Tones 纯音和复合音的频率鉴别率
Influence of masking noise on hearing threshold and frequency discrimination in guinea pigs 掩蔽声对豚鼠听阈和频率辨别阈的影响
A New Optical Frequency Discrimination Method 一种新的光学鉴频方法
Frequency Discrimination by Digital Transversal Filter 数字横向滤波器实现频率鉴别
With the TDA method, this paper mainly introduces the principle and basic steps of digital frequency discrimination. 在时域分析法中,主要介绍了数字鉴频的指导思想和基本步骤;
Frequency discrimination technology of test turntable based on photoelectric rotary encoder 基于光电轴角编码器的测试转台鉴频技术
Frequency discrimination of a sine amplitude-modulator in guinea pigs 豚鼠对正弦调幅波的频率辨别
In this paper, a convolution frequency discrimination algorithm which can measure the center frequency of a linear frequency modulation signal and its linear frequency modulation coefficient is derived. 本文推导了一种能够测量线性调频信号中心频率及其线性调频系数的卷积测频算法。
A Digital Frequency Discrimination Technique Based on CORDIC Algorithm 一种基于CORDIC算法的数字鉴频方法
Based on the analysis of generation and demodulation of binary frequency shift keying in digital communication, this paper introduces that using one set of frequency discrimination circuit to demodulate binary frequency shift keying signal in special working environments. 在分析数字通信中二进制移频键控信号的产生及解调基础上,提出一种应用于特殊工作环境中的单频点鉴频解调二进制移频键控信号的方法。
Paired pulse discrimination test and frequency discrimination test were carried out in 7 totally deaf patients with cochlear prosthesis in order to evaluate functional condition of surviving auditory nerve. 对7例植入人工耳蜗的聋人进行了双脉冲辨别和频率辨别试验,测定其残存听神经的功能状态。
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. 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 principle of frequency discrimination ( FD) by digital transversal filter is discussed. 本文讨论了数字横向滤波器实现频率鉴别的原理。
The Gate Effect of the Multi-period Synchronous Frequency Discrimination Method and its Compensation Method 多周期同步鉴频法闸门效应及其频谱补偿技术
The determination of time discrimination and frequency discrimination and the selection of a window function in the short-term Fourier transform ( STFT) were discussed to analyze the vibrational signals from a high-pressure hydraulic pump unit. 对水泵机组振动信号分析中短时傅立叶变换的时间分辨率和频率分辨率的设定、窗函数的选取进行了研究。
Software frequency discrimination and phase-locked technique in synchronization communication 同步通信中的软件鉴频与锁相技术
Frequency Discrimination for Weak Signals 弱信号鉴频
Aiming at the disadvantages of analog frequency estimation in traditional receiver, this article proposes an algorithm of digital frequency discrimination based on distributed arithmetic. 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。
The effect of environmental noise on sound signal frequency discrimination 环境噪声对声信号频率辨别阈的影响
PSPICE emulational analysis of a frequency discrimination expandor 鉴频放大器的PSPICE仿真分析
The vector synthesis phase is adopted to deduce the frequency discrimination curve of discriminator, which is the sketchy description. 目前国内对相位鉴频器鉴频曲线的推导,均采用矢量合成法,这是一种在粗略意义上的描述。
On the FSK ( Frequency Shift Keying) digital receiver, the signal is demodulated mainly by frequency discrimination. 在FSK(频移键控)数字接收机中,信号的解调主要以鉴频为主。