Multi-source error analysis and simulation of high accuracy strapdown inertial navigation system in overload section of ballistic missile

被引：0
|
作者：
Chen X. [1 ,2 ]
Shi C. [1 ,2 ]
Liu D. [1 ,2 ]
机构：
[1] School of Instrument Science and Engineering, Southeast University, Nanjing
[2] Key Laboratory of Micro-inertial Instrument and Advanced Navigation Technology of Ministry of Education, Nanjing
来源：
Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology | 2020年 / 28卷 / 01期
关键词：
Ballistic missile; High dynamic; Multi-source error model; Strapdown inertial navigation system;
D O I：
10.13695/j.cnki.12-1222/o3.2020.01.005
中图分类号：
学科分类号：
摘要：
A high dynamic environment is formed by a combination action of various external forces on ballistic missile in overload section, which will produce large error accumulation of inertial navigation system at shutdown point. A multi-source error model is established, aiming at the high dynamic environment in boost phase. Based on the existing low dynamic model, some novel sources of SINS errors are analyzed, such as sensor errors, scale factor error, nonorthogonal error, level arm error, quadratic error, coning motion, linear vibration, and initial misalignment angle error of SINS. Then, simulations are done and influences of the error sources on the system errors are analyzed by a ballistic missile trajectory in boost phase. Simulation results show that, lateral positional deviation accuracy is improved by 80 times after the proposed error model compensation under the high dynamic environment, compared to the traditional error compensation model, which provides more theoretical support to improve missile landing accuracy further. © 2020, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.
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页码：27 / 34
页数：7
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