弹载双基前视成像雷达解析-迭代定位方法  

Analytic-iterative positioning method for missile-borne bistatic forward-looking imaging radar

作　　者：詹珩艺 李亚超[1] 武春风 宋炫 张廷豪 ZHAN Hengyi;LI Yachao;WU Chunfeng;SONG Xuan;ZHANG Tinghao(National Key Laboratory of Radar Signal Processing,Xidian University,Xi’an 710071,China;China Space San Jiang Group Limited,Wuhan 430040,China)

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071 [2]中国航天三江集团有限公司,湖北武汉430040

出　　处：《系统工程与电子技术》2023年第1期71-78,共8页Systems Engineering and Electronics

基　　金：科技部重点研发计划(2018YFB2202505,2018YFB2202500);陕西省重点研发计划(2017ZDXM-SF-094);陕西省杰出青年科学基金(2020JC-25)资助课题。

摘　　要：在弹载寻的制导阶段,针对传统双基定位方法受限于速度、角度等参数精度的问题,提出一种最优解析-迭代双基定位方法。该方法首先建立基于图像匹配的弹载双基前视成像定位模型,并分析推导出定位模型的解析解集,然后结合惯导参数与初始迭代点的选取准则,确立最优初始迭代点,实现快速迭代搜索,获取接收雷达最优三维坐标,完成双基雷达的精确定位。在此基础上,建立运动误差和匹配误差模型,并通过仿真实验分析其对定位精度的影响。仿真实验验证了在相同实验环境和条件下,最优解析-迭代定位方法的有效性和准确性。In the guidance stage of missile-borne homing,to solve the problem that traditional bistatic positioning methods are limited by the accuracy of parameters such as speed and angle,an optimal analytical-iterative bistatic positioning method is proposed.First,a missile-borne bistatic forward-looking imaging positioning model is established based on image matching,and the analytical solution set of the positioning model is analyzed and derived.Then the optimal initial iteration point is determined by selection criteria,which is determined by the inertial navigation parameters.Finally,fast iterative search is realized,the optimal three-dimensional coordinates of the receiving radar is obtained,and the precise positioning of the bistatic radar is completed.On this basis,the motion error and matching error models are established,and their influence on positioning accuracy is analyzed through simulation experiments.The results show that under the same experiment conditions and evironment,the proposed analytical-iterative positioning method has high positioning efficiency and accuracy.

关 键 词：双基前视 图像匹配 解析-迭代 弹体定位 

分 类 号：TN957[电子电信—信号与信息处理]