Analysis on measurement accuracy of MEMS inertial height gauge

被引：1
|
作者：
Du J. [1 ]
Chen Q. [1 ]
Niu X. [1 ]
Liu J. [1 ]
机构：
[1] GNSS Research Center, Wuhan University, Wuhan
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2019年 / 41卷 / 11期
关键词：
Attitude dynamic; Inertial height gauge; Inertial navigation system; Segmentation measurement; Short-time relative elevation measurement;
D O I：
10.3969/j.issn.1001-506X.2019.11.25
中图分类号：
学科分类号：
摘要：
The short-time relative height elevation measurement accuracy of the inertial navigation system for micro-electro-mechanical systems (MEMS) is studied. The "inertial height gauge" algorithm is designed. Two verification experiments of desktop height measurement and floor height measurement are carried out. The measurement accuracy of the "inertial height gauge" under different motion conditions and motion duration is analyzed. A method of segmentation measurement is proposed based on the zero-velocity update technique. The experimental results show that the desktop height measurement can achieve millimeter-level accuracy (relative error 0.17%). The accuracy of floor height measurement reaches multi-layer level in the measurement of multiple floors and millimeter level in the measurement of the single floor (relative error 0.22% or 0.06%). The measurement error is positively correlated with the attitude dynamic and motion duration of the carrier. Experiments verify that the inertial navigation system for MEMS is highly feasible for height measurement, and the stable motion conditions and faster measurement time can improve the measurement accuracy. © 2019, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：2605 / 2610
页数：5
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