signal frequency spectrum

The paper proposes a method of frequency domain pairing according to spectrum parameter of beat signal.

本文则提出一种通过特征参数进行频域配对消除距离速度耦合的方法,结构简单,容易实现.

Realization of Suppression of Narrow-Band Interferences In Direct Sequence Spread Spectrum Signal Using Frequency-Domain Algorithm

直扩信号中多窄带干扰自适应抑制的频域算法及系统实现

Synchronization-correlation and mutually-correlation of two kinds of signal were analyzed-domain, Fourier spectrum was studied in frequency-domain.

时域上着重分析两种信号的同步性以及它们的自相关和 互相关, 频域上研究了信号的傅立叶谱.

The cyclic spectrum of cyclostationary signal includes information as carrier frequency, chip width and amplitude.

循环平稳信号的循环谱包含了载频 、 码片时宽和幅度等信息.

The phase noise is not only the main specification for the signal generators of the radar, communication and ECCM, but also the main basis to measure the spectrum purity of the frequency synthesizer.

相位噪声是雷达、通信、电子对抗等装备中发射源的主要技术指标，也是衡量频率合成器信号纯度的主要依据。

It produces the primary signal first to carry on the display of time domain, the display of frequency domain and frequency spectrum, and compose the observing signal; finally it carries on the correlation analysis again after the signal filtered to remove the harmonic interference signal.

首先是对原始信号进行时域波形显示，频域频谱显示，初步观察信号的组成，最后再对滤波后的信号进行相关分析，除掉谐波干扰信号。

The functions of signal analysis include the time field Statistics analysis, the time field mutual analyzing, the frequency spectrum analyzing, the relevant analysis, the transmission function analysis, the demodulating analysis, and the short Fourier transformation of the time and frequency field etc.

系统的信号分析功能包括时域统计分析、时域相关分析、频谱分析、相干分析、传递函数分析、解调分析以及时频分析中的短时傅立叶变换等。

This paper discusses the sampling criteria of the intermediate frequency signal in the linear frequency modulated continuous wave radar, and analyses the spectrum leakage phenomena that exist in its discrete spectrum and the features of the maximum distinguishable range that should be limited.

本文探讨了对线性调频连续波雷达的中频信号采样所需遵循的准则，分析了其离散频谱具有的频谱泄漏现象和需要限制可分辨最大作用距离的特性。

Conclusion: ① CDPI is superior to CDFI in detecting blood flow signal of HCC, the pulsatile blood flow frequency spectrum has certain significance on HCC diagnosis.

结论：①对HCC瘤体观察所获血流信息CDPI较CDFI敏感，PW探及搏动性血流频谱的检出具有确诊意义；

Based on the analysis of the sensor signal frequency spectrum is made with a SD 2380 instrument.

在分析该传感器信号的基础上,用SD2380动态分析仪作了频谱分析.