| 基于多观测量的舰载惯导传递对准精度评估方法 |
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| 引用本文： | 荣文婷,程建华,赵琳. 基于多观测量的舰载惯导传递对准精度评估方法[J]. 系统工程与电子技术, 2013, 35(2): 381-385. DOI: 10.3969/j.issn.1001-506X.2013.02.25 |
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| 作者姓名： | 荣文婷 程建华 赵琳 |
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| 作者单位： | 哈尔滨工程大学自动化学院， 黑龙江 哈尔滨 150001 |
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| 基金项目： | 国家自然科学基金(61104036,61273081);中央高校基本科研业务费专项资金(HEUCF041201)资助课题 |
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| 摘 要： | 针对传递对准精度评估采用差分GPS作为基准量存在对载体机动特性要求高的问题，以舰载惯导传递对准精度评估为研究对象，引入差分GPS速度、位置和舰载主惯导姿态为参考信息；以捷联惯导系统误差方程为基础，推导了状态方程和量测方程；设计了基于固定点的卡尔曼平滑算法；考虑不同主惯导姿态误差条件情况，与传统的传递对准精度评估方法的评估效果进行了比对仿真分析，给出了分析结论。仿真结果表明，基于多观测量的精度评估方法仅通过舰船的摇摆运动，能实现对舰载惯导姿态误差的有效估计。
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| 关 键 词： | 捷联式惯导系统 传递对准 精度评估 卡尔曼固定点平滑 |
Transfer alignment evaluation method for shipborne SINS based on multi-observation variable |
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| RONG Wen-ting,CHENG Jian-hua,ZHAO Lin. Transfer alignment evaluation method for shipborne SINS based on multi-observation variable[J]. System Engineering and Electronics, 2013, 35(2): 381-385. DOI: 10.3969/j.issn.1001-506X.2013.02.25 |
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| Authors: | RONG Wen-ting CHENG Jian-hua ZHAO Lin |
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| Affiliation: | College of Automation, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | Because of the high demand towards the vehicle linear movement characteristics in the conventional transfer alignment evaluation method which uses the differential GPS as the base, a new method for the shipborne strapdown inertial navigation system (SINS) is proposed. The main SINS attitude is involved as the base information besides the differential GPS. Then the state equation and the observation equation are deduced based on the SINS dynamic error equation and various base information. By choosing the fixed point Kalman smoothing algorithm and giving various attitude errors of the main SINS, the attitude error of a shipborne SINS can be evaluated accurately. Simulation results show that the new method can realize the fast and accurate attitude evaluation effectively only by the sway of the ship. |
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