A new method of parameter estimation for sinusoidal frequency modulated continuous wave signal

Xiaopeng NIE; Zucheng SHEN; Xiaofeng WANG; Chunyu WANG

doi:10.11959/j.issn.1000-0801.2018089

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A new method of parameter estimation for sinusoidal frequency modulated continuous wave signal

research and development | 更新时间：2024-06-05

- A new method of parameter estimation for sinusoidal frequency modulated continuous wave signal
- Telecommunications Science Vol. 34, Issue 2, Pages: 74-80(2018)
- 作者机构：
  
  1. 三峡大学电气与新能源学院，湖北宜昌 443002
  2. 空军航空大学信息对抗系，吉林长春 130022
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2018089
  CLC： TN971.1
- Published Online：2018-02，
  
  Published：20 February 2018
- 稿件说明：
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Xiaopeng NIE, Zucheng SHEN, Xiaofeng WANG, et al. A new method of parameter estimation for sinusoidal frequency modulated continuous wave signal[J]. Telecommunications science, 2018, 34(2): 74-80.
DOI：

Xiaopeng NIE, Zucheng SHEN, Xiaofeng WANG, et al. A new method of parameter estimation for sinusoidal frequency modulated continuous wave signal[J]. Telecommunications science, 2018, 34(2): 74-80. DOI： 10.11959/j.issn.1000-0801.2018089.

摘要

针对电子侦察截获的正弦调频连续波信号，提出一种调制参数估计的新方法。首先基于信号调制函数的周期性，采用自相关函数完成调制频率估计，然后基于重排谱图提取调频曲线，对调频曲线进行修正，进而实现载频、调制指数和初始调制相位的估计。仿真实验表明，该方法在无需先验知识，且信噪比为-5 dB时，各调制参数均具有较高的估计精度，均方误差均能低于-25 dB。

Abstract

A new method of modulation parameter estimation was proposed to process the sinusoidal frequency modulated continuous wave signal intercepted by electronic reconnaissance.Firstly

based on the periodicity of signal modulation function

the modulated frequency was estimated using autocorrelation function.And then

the frequency modulation curve was extracted and revised based on rearranging spectrogram.Finally

the carrier frequency

the modulation exponent and the initial phase were estimated by the frequency modulation curve.The simulation experiment results show that the proposed method does not require prior knowledge

and the mean square error of each modulation parameter can reach -25 dB by using this method when SNR is -5 dB.

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references

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