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Frontiers of Optoelectronics

Front. Optoelectron.    2019, Vol. 12 Issue (3) : 332-340     https://doi.org/10.1007/s12200-019-0867-8
RESEARCH ARTICLE
Ship hull flexure measurement based on integrated GNSS/LINS
Di WU1,2, Yu JIA3(), Li WANG3, Yueqiang SUN1
1. National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
2. University of Academy of Sciences, Beijing 100049, China
3. Huazhong Institute of Electro-optics—Wuhan National Laboratory for Optoelectronics, Wuhan 430223, China
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Abstract

For precision carrier-based landing aid, the position of reference point on the top of island shall be precisely transferred to the landing point on the deck, so the position transfer error caused by the hull flexure is not negligible. As the existing method is not very applicable to measure the hull flexure, a new technique based on integrated Global Navigation Satellite Systems/Laser Gyro Inertial Navigation System (GNSS/LINS) is proposed in this paper. This integrated GNSS/LINS based measurement method is designed to monitor the hull flexure and set up an integrated GNSS/LINS measurement model based on raw pseudo-range and pseudo-range rate measurement and carrier phase differential positioning measurement to effectively eliminate the measurement error caused by cycle slip and multi-path effect from GNSS. It is shown by demonstration test and analysis that this technique has the capability to precisely measure the hull flexure, with the accuracy being better than 0.02 m.

Keywords satellite navigation      inertial navigation      flexure measurement      Laser Gyro     
Corresponding Authors: Yu JIA   
Online First Date: 11 June 2019    Issue Date: 16 September 2019
 Cite this article:   
Di WU,Yu JIA,Li WANG, et al. Ship hull flexure measurement based on integrated GNSS/LINS[J]. Front. Optoelectron., 2019, 12(3): 332-340.
 URL:  
http://journal.hep.com.cn/foe/EN/10.1007/s12200-019-0867-8
http://journal.hep.com.cn/foe/EN/Y2019/V12/I3/332
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Fig.1  Integrated GNSS/LINS schematic diagram
Fig.2  Block diagram of tight integration GNSS/LINS
Fig.3  Experimental set-up of GNSS/LINS
Fig.4  Flexure measurement error in east direction
Fig.5  Flexure measurement error in north direction
Fig.6  Flexure measurement error in up direction
Fig.7  Number of common-view satellites for differential positioning
Fig.8  HDOP for GNSS differential positioning
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