基于可观测度分析的传递对准精度评估方法  

Approach of transfer alignment accuracy evaluation based on observability degree analysis

作　　者：程建华[1] 陈岱岱[1] 王冰玉[1] 王通达 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《系统工程与电子技术》2015年第4期895-900,共6页Systems Engineering and Electronics

基　　金：国家自然科学基金(61104036;61374007;62173081);中央高校基本科研业务费专项资金(HEUCFX41309)资助课题

摘　　要：针对传统舰载领域传递对准精度评估性能受限于舰船有限的机动能力问题,提出了通过引入天文航向信息以及减速机动的舰载武器惯导系统传递对准精度评估方法。通过精度评估系统的可观测性分析,给出了引入角运动观测量以及载体机动这两种方法各自与精度评估性能之间的关系,并分别提出引入天文方位信息和舰船减速强机动的精度评估方法,利用固定点平滑算法进行仿真分析。仿真结果表明,引入天文航向信息的精度评估方法具有良好的姿态失准角评估性能,平滑误差小于10%,且所设计的减速强机动可以进一步提升方位失准角的平滑精度。In order to solve the problem that the performance of transfer alignment accuracy evaluation is retrained by the ship＇s limited maneuver ability, a method of accuracy evaluation for shipborne weapon inertial navigation system is put forward. The azimuth information applied by celestial navigation system and decelera- ted maneuver manner are introduced. Observability analysis of system is implemented so that the relationship between accelerated motion, rotation observation variable and the performance of evaluation approach are pro- posed. And a simulation is carried out by using fixed-point smoothing algorithm. The result shows that the pro- posed method has an excellent performance for misalignment angles, and the errors of smoothed estimations are less than 10 percents. Moreover, the decelerated maneuver can improve the smoothed accuracy of azimuth mis- alignment angle.

关 键 词：惯导系统 传递对准 卡尔曼滤波器 固定点平滑算法 可观测性分析 

分 类 号：U666.1[交通运输工程—船舶及航道工程]