J4 ›› 2010, Vol. 28 ›› Issue (01): 20-.

• 论文 • 上一篇    下一篇

相位差变化率定位法中缺失值精确填补研究

张国毅a,宋德亮b,王长宇a,李冬梅a   

  1. 空军航空大学 a.航空信息对抗系;b.研究生队,长春 130022
  • 出版日期:2010-01-20 发布日期:2010-04-06
  • 通讯作者: 张国毅(1965— ),男,吉林辽源人,空军航空大学教授,博士,硕士生导师,主要从事雷达信号处理研究,(Tel)86-13756084691 E-mail:zhanggy1211@sina.com
  • 作者简介:张国毅(1965— ),男|吉林辽源人|空军航空大学教授|博士|硕士生导师|主要从事雷达信号处理研究,(Tel)86-13756084691(E-mail) zhanggy1211@sina.com|宋德亮(1984— ),男|沈阳人|空军航空大学硕士研究生|主要从事航空航天电子侦察研究|(Tel)86-13843000830(E-mail)mouse_xiaoliang@yahoo.cn。

Study on Missing Data Imputation of Passive Location Based on Phase Difference Rate of Change

ZHANG Guo-yia, SONG De-liangb,WANG Chang-yua,LI Dong-meia
  

  1. a.Department of Aviation Communication Counter|b.Graduate Student Team, Aviation University of Air Force, Changchun 130022,China
  • Online:2010-01-20 Published:2010-04-06

摘要:

采用目标信号相位差和载频为观测量,利用相位差变化率定位算法对目标进行定位时,由于条件限制和外界干扰,侦察系统会丢失某些观测数据,导致定位精度迅速下降。为此,提出利用最小二乘多项式曲线拟合法填补观测数据的缺失值,再进行定位解算。该方法不仅具有较精确的填补能力,而且不受缺失值分布情况的限制,保证了测量值的完整性和准确性,实现了相位差变化率定位法的快速高精度定位。仿真结果表明,该方法在5 s内的相对定位误差为2.14%。

关键词: 相位差变化率, 缺失值, 最小二乘法, 曲线拟合, 快速定位

Abstract:

Take object signal phase difference and carrier frequency as observation variables and utilizing phase difference rate of change passive location method goes to object.Because of disturbance, measurement data may be missed and the that passive location precision of phase difference change rate rapidly declines.A least squares curve fitting method is presented to fill up missing data. This method can not only be provided with highly precise filling ability but also be good at stable performance no matter what form of missing data will be. Therefore taking this method we can realize fast and exact passive location of phase difference change rate. Simulation results show that the method can reach corresponding passive location error 2.14% within 5 s.

Key words: missing data, least squares method, urve fitting, phase difference rate of change, fast location

中图分类号: 

  • TN971