FOURIER transformsSIGNAL-to-noise ratioRANDOM noise theoryMATHEMATICAL modelsThis paper investigates the signal detection of multiple chirps based on the discrete chirp-Fourier transform (DCFT). The detection method based on signal energy is proposed and the detection performance is analyzed. Firstly, ...
【关键词】分数阶Fourier域;分数阶Fourier变换;带限信号;调频率;能量聚焦 【中图分类号】TN911.7 【文献标识码】B ResearchofSub-samplingofChirpSignalinFRFTDomain ZENGXianglai,ZHENGLin,HUANGQiang,WANGZhibo InformationandCommunicationCollege,GuilinUniversityofElectronicTechnology,GuangxiGuilin541004,China) ...
【关键词】分数阶Fourier域;分数阶Fourier变换;带限信号;调频率;能量聚焦 【中图分类号】TN911.7 【文献标识码】B ResearchofSub-samplingofChirpSignalinFRFTDomain ZENGXianglai,ZHENGLin,HUANGQiang,WANGZhibo InformationandCommunicationCollege,GuilinUniversityofElectronicTechnology,GuangxiGuilin541004,China) ...
Surface Acoustic Wave (SAW) devices are implemented for the important signal processing functions of chirp generation and compression. SAW devices are commonly used to generate and compress chirp signals because they are passive, inexpensive and easy to fabricate [6], [13]. However, SAW devices su...
In this paper a closed-form expression of the fractional Fourier transform of chirp signal is derived. The FrFT of chirp is used in calculating the spread of the signal representation for linear chirp in any fractional domain. The derived expression establishes the dependence of chirp parameters ...
Know how to generate a Chirp signal, compute its Fourier Transform using FFT and power spectral density (PSD) in Matlab & Python.
The whole processing just needs three times of FFT computa-tion complexity and can estimate all the chirp signal parameters. Simulation results show that the algorithm can estimate the parameters of chirp signal quickly and effectively at low SNR. 关键词:线性调频;WVD分布;分数阶Fourier变换;参数估计...
Adaptive Fractional Fourier Transform Based Chirp Signal Detection and Parameter Estimation基于自适应分数阶傅里叶变换的线性调频信号检测及参数估计分数阶傅里叶变换自适应滤波Chirp信号参数估计An adaptive method of fractional Fourier transform based on Least Mean Square (LMS) algorithm is proposed and is used...
Ultrasonic range measurement system send out ultrasonic chirp signal, the reflected echo signal is received by the system and transferred into electrical signal by piezoelectric sensor; time of difference between sending and receiving signal is used to calculate the distance. But there is multi-reflecti...
Keywords:Fourier transform;fractional Fourier transform;Chirp signal;Gauss pulse modulated Chirp signal 0引言 Fourier 变换(Fourier Transform,FT)作为最主要的信号分析工具主要用于处理频率不随时间 变化的平稳信号,在时频平面时间轴与频率轴相互垂直,即 Fourier 变换是从时间域旋转 π/2 到频 率域。但是 Fourier...