计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (26): 129-131.

• 数据库、信号与信息处理 • 上一篇    下一篇

一种新的双DIFAR浮标目标定位方法

陶林伟,王英民   

  1. 西北工业大学 航海学院,西安 710072
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-09-11 发布日期:2011-09-11

New dual DIFAR sonobuoy targets location method

TAO Linwei,WANG Yingmin   

  1. College of Marine,Northwestern Polytechnical University,Xi’an 710072,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-09-11 Published:2011-09-11

摘要: 为了提高双DIFAR浮标的定位精度,提出一种新的基于扩展卡尔曼滤波的双DIFAR浮标目标参数估计与跟踪算法。建立目标与浮标的数学运动模型及坐标系,推导出目标状态方程及观测方程,最后确定了滤波初始状态值及初始协方差矩阵。仿真结果表明,使用卡尔曼滤波技术,成功实现了目标参数估计与跟踪的任务。该算法与经典算法相比,跟踪精度更高,同时可以直接计算出目标速度及航向。

关键词: 浮标, DIFAR浮标, 扩展卡尔曼滤波, DIFIX定位方法

Abstract: In order to improve the positioning accuracy of the double-DIFAR(Direction Finding and Ranging)sonobuoy,a new method of the target parameters estimation and track based on the extend Kalman filter is proposed.It sets up the target and sonobuoy’s mathematical system,and finds the coordinate,then derives the target state equation and observation equation to finalize the initial state value of the filtering and the initial covariance matrix.The simulation results show that the use of Kalman filtering techniques success in achieving the target parameter estimation and tracking tasks.Compared with the classical method,the tracking accuracy is higher,and the target speed and heading can be counted directly.

Key words: sonobuoy, DIFAR sonobuoy, extend Kalman filter, DIFAR FIX(DIFIX)