A New Kind of Time-Frequency Representation for Multi-LFM Signals

LI Ying-xiang; XIAO Xian-ci

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A New Kind of Time-Frequency Representation for Multi-LFM Signals

更新时间：2025-07-16

- A New Kind of Time-Frequency Representation for Multi-LFM Signals
- Acta Electronica Sinica Vol. 30, Issue 12, Pages: 1879-1881(2002)
- 作者机构：
  
  电子科技大学电子工程学院,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.7
- Published：2002
- 稿件说明：
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LI Ying-xiang, XIAO Xian-ci. A New Kind of Time-Frequency Representation for Multi-LFM Signals[J]. Acta Electronica Sinica, 2002, 30(12): 1879-1881.
DOI：

LI Ying-xiang, XIAO Xian-ci. A New Kind of Time-Frequency Representation for Multi-LFM Signals[J]. Acta Electronica Sinica, 2002, 30(12): 1879-1881. DOI：

摘要

本文提出了一种用于多线性调频信号时频表示的方法.首先由Radon-Ambiguity变换设计出线状核函数

以去除噪声和多线性调频信号之间的交叉项在模糊域中的影响

再通过二维傅立叶变换得到一种新的时频表示.仿真实验证明了此方法可以有效的去除噪声和多信号之间交叉项的影响

在低信噪比下也十分有效.

Abstract

A method for multi-LFM signals time-frequency representation is proposed.Firstly

we use the Radon-Ambiguity transform to get the linear kernel function

which can remove the cross terms of multi-LFM signals and some part of noise in the ambiguity domain.Then we use the two-dimensional Fourier transform to get the new time frequency representation.The validity of removing noise and cross terms of this method has been shown by computer simulation even in low signal to noise ratio condition.

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College of Electronic Information Engineering,Inner Mongolia University,Huhhot

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