The instantaneous frequency (IF) is a very important feature of nonstationary signals in
numerous applications. The first overview of the concept and application of the IF estimators …

An algorithm for efficient and accurate computation of the fractional Fourier transform is
given. For signals with time-bandwidth product N, the presented algorithm computes the …

Shift and rotation invariance properties of linear time-frequency representations are
investigated. It is shown that among all linear time-frequency representations, only the short …

The Radon transform of a time-frequency distribution produces local areas of signal
concentration that facilitate interpretation of multicomponent signals. The Radon-Wigner …

The wavelet transform (WT) and the fractional Fourier transform (FRFT) are powerful tools for
many applications in the field of signal processing. However, the signal analysis capability of …

Radar target detection in sea clutter is of significance to both the civil and military
applications. With the miniaturization and invisibility of sea targets, Small Floating Targets …

The Stockwell transform (ST), which is a reversible method of time-frequency spectral
representation, is an extension of the ideas of the wavelet transform (WT) and short-time …

Publisher Summary This chapter is an introduction to the fractional Fourier transform and its
applications. The fractional Fourier transform is a generalization of the ordinary Fourier …

海杂波背景下雷达目标特征检测方法的现状与展望 作者中心 专家审稿 责编办公 编辑办公 首页
论文 1.当期论文 2.全部论文 3.优先发表 数据 1.雷达对海探测数据 2.SAR样本数据集 3.多源 …

A two-dimensional (2-D) signal with a variable spatial frequency is proposed as a watermark
in the spatial domain. This watermark is characterized by a linear frequency change. It can …