雷达测距拟合微分求速方法研究  

A Study on Getting Radar Radial Velocity by Range Fitting and Differential Method

作　　者：郭文胜[1] 宫志华[2] 董立涛[2] 陈烽[1] 

机构地区：[1]西安交通大学电信学院,西安710049 [2]中国白城兵器试验中心,吉林白城137001

出　　处：《现代雷达》2010年第8期33-38,共6页Modern Radar

摘　　要：雷达测距元的高采样率为测距拟合微分求速提供了基础条件,但必须对测距元数据进行合理的平滑和拟合以消除相关噪声的影响。文中采用自由节点多项式样条函数建立雷达测距元拟合函数,通过最小二乘优化设计的方法搜寻最优节点,使节点分布自适应目标运动规律,再微分求速。通过仿真和实例计算,对该方法处理过程和求解速度精度水平进行了分析。The high sampling rate of range measured by radar offers a basic condition for the range data fitting and differential to get radial velocity,but this method needs the range data to be smoothed and fitted to reduce the correlative noise.This paper uses polynomial free knots spline function to find the fitting function of the radar range,and uses the least square optimizing design to get the optimal knots which distribution can adapt for the objective movement,then the radial velocity can be got by differential.The disposal process and the precision level of this method are also analyzed through simulation and real data calculation.

关 键 词：雷达测距 多项式样条函数 最小二乘 优化问题 

分 类 号：TN953.2[电子电信—信号与信息处理]