信号频谱

基于DSP的实时信号频谱分析模块设计

Design of real-time signal spectrum analysis module based on DSP

基于DSP和Ethernet的实时信号频谱监测系统

Real-time Signal Spectrum Monitoring System Based on DSP and Ethernet Network

OFDM机会频谱接入的信号频谱成型方法

Spectral Sculpting of OFDM Signal for Opportunistic Spectrum Access

线性调频Z变换在信号频谱分析中的应用

Chirp-Z Transform and its Applications in Spectrum Analysis

周期信号频谱分析演示CAI软件的编程实现

The Programming and Realization of the CAI Software for Periodic Signal Spectrum Analysis and Demonstration

DDS输出信号频谱结构的系统分析

The Systematic Analysis of the Spectrum Structure of DDS Signal

从PAL信号频谱入手恢复信号副载波

Subcarrier Recovery on the Basis of the Spectrum of PAL Signal

本文研究了无线局域网中使信号频谱得到优化的一种简单OFDM子载波加载算法。

In this paper , we consider a simple loading algorithm for OFDM systems in WLAN for signal spectrum optimization .

利用此方法，对回波信号频谱做距离向逆Chirpz变换，便可对距离单元迁移进行有效补偿。

We can calculate the inverse Chirp Z-transform of SAR echo on range dimension use this method to compensate the RCM .

该文提出了一种新的宽带线性调频（LFM）信号频谱压缩数字接收方法。

This paper proposes a novel spectrum-compressed digital receiving method using Laguerre transformation for LFM signal .

运用VISUALBASIC编写了客户软件，实现音频信号频谱分析数据的以太网传输和PC端频谱分析数据的图形显示。

With Visual Basic , it has been realized that the the transfer of spectral analysis data on the Ethernet and the data can be displayed as an image by the client software .

分析了数字方法运用于波形合成中由于DAC零阶保持特性造成的信号频谱高频失真的机理；

The mechanism of the signal spectrum distortion because of DAC 's zero-order holding is analysed .

基于Morlet小波的高分辨率信号频谱估计

High Resolution Signal Spectrum Estimation Based on Morlet Wavelet

为了解决高频信号频谱检测系统数据采集慢、体积庞大的问题，开发了基于DSP芯片的数据采集及处理系统。

In order to improve the speed of data acquisition and retrench the high frequency signal detecting system , a data-acquisition and transacting system is put forward based on DSP .

分析了存在距离-速度同步拖引干扰时的信号频谱特征，研究了一种脉冲多普勒（PD）雷达抗距离-速度同步拖引干扰的方法。

The spectrum characteristics of synchronous jamming on range and velocity are analyzed . A method for a PD radar to counter the jamming is also discussed .

正交DRFM的系统仿真及其信号频谱分析

Simulation and Analysis of Spectrum of I-Q DRFM

与小波变换（WT）相比，HLT对信号频谱的划分更加灵活。

Comparied to the wavelet transforms ( WT ), HLT have more flexibility in dividing the signal spectrum .

在DDS频谱性能量化理论基础上，从相位噪声以及非线性余弦函数映射两个方面对DDS输出信号频谱纯度性能优化。

Based on DDS spectrum performances measurement theories , the methods of spectrum performance optimization were proposed from the two aspects including phase noise and nonlinear Sine / Cosine Map function .

明胶溶液的pH值较大时，超声回波信号频谱主频幅值较大，频谱主频偏移量较小，明胶溶液内部分子呈开放线团构象。

The higher the pH value of gelatin solution is , the larger the peak values of ultrasonic echo signal frequency spectrum . The offset of frequency spectrum is small and the molecules in gelatin solution have a open coil conformation .

针对传统数字调制信号频谱扩展问题，提出具有相位突变特性的时相调制（TPM）方式。

Aiming at the spectrum spread problem of traditional digital modulation signals , a time-phase modulation ( TPM ) method with abrupt phase change characteristic is proposed .

首先总结了当前主要的几种频谱特征提取方法的优缺点，在对典型辐射源信号频谱特征分析的基础上，设计可以反映信号局部频谱结构的Spectrum原子，并提出多尺度Spectrum原子库构建方法。

At the beginning , the advantages and disadvantages of current main spectrum feature extraction methods are concluded . Based on it , the Spectrum atom expressing the local spectrum structure of signals is designed and a method of multi-scale Spectrum atom dictionary is proposed .

本文采用了能较好地反映心率变异信号频谱特性的分析方法&样条插值法对HRV信号进行重采样。

Resample on HRV signal is necessary . In this chapter after comparing different evenly sampling methods , the best way - cubic spline interpolation is adopted in spectrum estimation .

针对呼吸、心动信号频谱有重叠的特征，采用自适应LMS算法对信号进行相关噪声抵消处理，从而获取较为理想的心动信号。

According to the overlap of the respiration and heartbeat frequency spectra , an adaptive LMS algorithm has been adopted to reduce the correlative noise and to form a more ideal heartbeat waveform .

文章通过对DIT-FFT算法的详细分析，提出了一种计算机软件仿真信号频谱分析方案，并给出了关键算法的C语言程序。

The article detailed analysis through DIT-FFT algorithm , presented a kind of analysis program about computer software simulation signal spectral , and given a key algorithm C language procedures .

通过对压气机旋转失速形成、发展、退出过程中压力信号频谱演化特性的分析，提出了一种基于FFT的压气机旋转失速信号检测判据。

Based on the analysis of spectrum evolving characteristics of pressure signal measured from a compressor before , during , and after rotating stall , a criterion based on FFT is put forward to detect rotating stall signal .

该稳定本振源由一个微波锁相环路（PLL）和一种新型自动频率控制电路（AFC）组成，文中分析了影响微波输出信号频谱纯度和相位噪声的主要因素。

The source consists of a microwave phase-locked loop and a new type of automatic frequency control circuit . Chief factors to influence spectrum purity of microwave output signal and phase noise are analyzed .

该系统采用Fizeau干涉仪进行信号频谱分析，形成的梳状干涉图案强度分布可以通过线列CCD探测器测定，其重心位置决定信号的多普勒频移量或径向风速。

The system uses a Fizeau etalon for spectral analysis , and the comb-like interference patterns are determined by a linear CCD array . The gravity of the pattern is proportional to the Doppler shift of the backscattering signal from wind .

论文介绍了Galileo卫星导航系统的空间部分、地面控制部分、用户设备部分和系统的特点，着重研究了BOC调制的原理、信号频谱特性和信号产生。

Firstly the space part , the ground control part , the user equipment part and the characteristic of Galileo satellite navigational system are introduced in the dissertation , and the BOC modulation principle , the signal frequency characteristic and the signal generation are mainly studied .

本文依据Gibbs现象的实质，讨论了信号频谱分析中的理想滤波特性、频窗特性、限带白噪声的自相关函数、时域截断的泄漏效应、时窗特性以及离散采样信号的复原等问题。

Based on the essence of the Gibbs phenomenon , the ideal filtering characteristics , the time window characteristics , the spectral window characteristics , the autocorrelation function of band-limited white noise , the leakage effect and the restoration of discrete sampling signal in signal spectrum analysis are discussed .

本文用Romberg数值积分法计算出在一定能量损耗限值要求下的脉冲信号频谱宽度，并用付氏级数对其进行了信号重构验证，据此得出了脉冲信号测试系统带宽的最佳值。

This paper presents the pulse signal spectrum bandwidth using Romberg numerical integration algorithm under a certain energy wastage required . A reconstruction signal is obtained by Fourier Series , and the optimum bandwidth of the measurement system is also presented .