›› 2015, Vol. 28 ›› Issue (10): 15-.

• 论文 • 上一篇    下一篇

一种基于二分法的LFM调制斜率估计算法

崔刚,李涛   

  1. (国防科学技术大学 ATR国防重点实验室,湖南 长沙 410073)
  • 出版日期:2015-10-15 发布日期:2015-10-29
  • 作者简介:崔刚(1990—),男,硕士研究生。研究方向:雷达信息获取与目标识别技术。E-mail:luckowner@163.com

An Estimation Algorithm Based on the Dichotomy of LFM Modulation Slope

CUI Gang,LI Tao   

  1. (ATR National Defense Science and Techonlogy,National University of Defense Technology,Changsha 410073,China)
  • Online:2015-10-15 Published:2015-10-29

摘要: 针对实际工程中LFM信号传统试解调算法估计耗时较长,在信噪比较低的条件下存在误判的问题,采用了一种基于二分法的线性调频信号试解线调算法,通过对自相关信号估计误差进行分析,在自相关估计的调频斜率附近选择合理区间,并在该区间范围内使用二分法进行调制斜率的估计搜索。通过实验,证明所提出的方法在信噪比为-5~5 dB时比传统的试解调算法减少约五倍的运算时间。

关键词: 试解调, 二分法, 调制斜率, 自相关

Abstract: This paper focuses on the problem of the time consuming and poor anti-interference performance of traditional demodulate of modulation slope,the author advance a new demodulate method by using dichotomy,we first analyze the errors of the self-correlation estimation,then we use dichotomy on reasonable interval near the result,Through experiment,this mothed proofs effective and the coasting time reduce five times then the traditional demodulate.

Key words: demodulation;dichotomy;modulation slope;autocorrelation

中图分类号: 

  • TP301.6