基于遥外差数据估算初始定位误差的新方法  

New method to estimate initial positioning error based on telemetry-tracking deviation data

作　　者：郑小兵[1,2] 董景新[1] 孟令晶 张志国 

机构地区：[1]清华大学精密仪器与机械学系精密测试技术及仪器国家重点实验室 [2]大连91550部队

出　　处：《中国惯性技术学报》2010年第6期680-685,共6页Journal of Chinese Inertial Technology

基　　金：十一五预研项目(51309050809)

摘　　要：针对潜地导弹初始定位误差的估算问题,提出一种基于发射惯性系下遥外差数据进行解算的初始定位误差估算的新方法。该方法基于制导工具误差的产生机理及传递关系:建立了初始定位误差与遥外测数据之间的关系,推导出利用遥外差数据估算初始定位误差的数学模型,结合飞行试验数据分析了该方法的计算精度。在研究遥外差信息选取原则的基础上,重点分析了外测数据随机误差对于估算精度的影响,并提出了时间域上的最小二乘改进算法来提高估计结果的精度。利用飞行试验测量数据来验证该算法,计算结果证实了该估算方法的有效性和可行性。In order to estimate initial positioning error of submarine-to-ground missile accurately,a new method based on telemetry-tracking deviation data in launch inertial coordinate is presented.This method is built on the generation mechanism and transfer relation of the guidance instrument errors.The relation formula between initial positioning error and telemetry-tracking data is founded,and a mathematical model is deduced to estimate initial positioning error using telemetry-tracking deviation data.The accuracy of estimation method is analyzed by flight test data.On basis of the study about selection principle of telemetry-tracking deviation information,the analysis emphasis is put on improving tracking data accuracy,then the improved least square method based on time domain is presented.This method is verified by flying test measuring data,and the computing result proves that the method is effective and feasible.

关 键 词：初始定位误差 发射惯性系 遥外差数据 制导工具误差 

分 类 号：U666.1[交通运输工程—船舶及航道工程]