The Starting Point Problem of Parameters Estimation for LFM Signal Based on Newton's Method

XU Jia-jia; LIU Yu; DENG Zhen-miao

您当前的位置：

首页 >

文章列表页 >

The Starting Point Problem of Parameters Estimation for LFM Signal Based on Newton's Method

更新时间：2025-07-16

- The Starting Point Problem of Parameters Estimation for LFM Signal Based on Newton's Method
- Acta Electronica Sinica Vol. 37, Issue 3, Pages: 598-602(2009)
- 作者机构：
  
  南京航空航天大学信息科学与技术学院,江苏,南京,210016
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.6
- Published：2009
- 稿件说明：
移动端阅览
XU Jia-jia, LIU Yu, DENG Zhen-miao. The Starting Point Problem of Parameters Estimation for LFM Signal Based on Newton's Method[J]. Acta Electronica Sinica, 2009, 37(3): 598-602.
DOI：

XU Jia-jia, LIU Yu, DENG Zhen-miao. The Starting Point Problem of Parameters Estimation for LFM Signal Based on Newton's Method[J]. Acta Electronica Sinica, 2009, 37(3): 598-602. DOI：

摘要

本文研究了LFM信号参数估计的牛顿迭代方法的初始值问题

用计算量较小的DPT算法得到LFM信号中心频率和调频系数的估计值

以此作为牛顿迭代的初始值.性能分析表明

在DPT算法信噪比门限以上时

用本算法得到的中心频率和调频系数的估计值在牛顿迭代所需收敛域范围之内

保证牛顿迭代的收敛性.仿真结果表明

在信噪比门限以上时

用本文提出的方法所得参数估计的均方根误差达到克拉美-罗限.本算法计算量小

有利于LFM信号参数估计的准实时处理.

Abstract

In this paper

the starting point problem of parameters estimation for LFM signal based on Newton’s method is investigated.The DPT algorithm is used to gain the estimated value of the coefficient of frequency modulation and the center frequency of the LFM signal

and the two estimation values are used as the starting point of Newton's method.The performance analysis show that when signal-to-noise ratio(

SNR

) is greater than the

SNR

threshold of the DPT algorithm

the two estimations are in the range of the convergence region needed by Newton's method.So it will guarantee the convergence of Newton's method.The simulation results show that when

SNR

is greater than

SNR

threshold

the RMS error of the parameter estimations can reach the CRLB.The computational complexity of the algorithm proposed in this paper is low

and the algorit

hm is convenient for realizing quasi-real-time LFM signal processing.

关键词

Keywords

references

Views

1376

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Radar Active Electromagnetic Interference Visual Detection and Parameter Estimation Method

Joint Blind Estimation of PN Codes and Channels with Maximum Likelihood for DSSS Signals in Multipath Channels

Parameter Estimation for Logistic Model by ParticleSwarm Optimization Algorithm

Parameter Estimation of 3D Scattering Centers Based on CP-GTD Model

A Fast Algorithm for Mono-Component PPS Parameter Estimation

Related Author

ZHU Xuan

RUAN Jiang-jun

WU Hao

SHI Zhao-peng

HE Fang-min

MENG Jin

LIU Qiu-hong

XU Man-kun

Related Institution

School of Electrical Engineering and Automation, Wuhan University

National Key Laboratory of Electromagnetic Energy, Naval University of Engineering

School of Electronic Information and Communications, Huazhong University of Science and Technology

Information Engineering University

（武汉大学软件工程国家重点实验室, ）

⁰