Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements

Abstract An aided Inertial Navigation System (INS) is increasingly exploited in precise engineering surveying, such as railway track irregularity measurement, where a high relative measurement accuracy rather than absolute accuracy is emphasized. However, how to evaluate the relative measurement acc...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Qijin Chen, Quan Zhang, Xiaoji Niu, Jingnan Liu
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Inertial surveying Relative measurement accuracy Error propagation modeling Steady-state Kalman filter Precise engineering surveying Technology (General) T1-995
Acceso en línea:	https://doaj.org/article/a738e31d6134491eaaaa5bed9d6a3fcc
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a738e31d6134491eaaaa5bed9d6a3fcc
record_format	dspace
spelling	oai:doaj.org-article:a738e31d6134491eaaaa5bed9d6a3fcc2021-11-28T12:06:10ZSemi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements10.1186/s43020-021-00057-92662-1363https://doaj.org/article/a738e31d6134491eaaaa5bed9d6a3fcc2021-11-01T00:00:00Zhttps://doi.org/10.1186/s43020-021-00057-9https://doaj.org/toc/2662-1363Abstract An aided Inertial Navigation System (INS) is increasingly exploited in precise engineering surveying, such as railway track irregularity measurement, where a high relative measurement accuracy rather than absolute accuracy is emphasized. However, how to evaluate the relative measurement accuracy of the aided INS has rarely been studied. We address this problem with a semi-analytical method to analyze the relative measurement error propagation of the Global Navigation Satellite System (GNSS) and INS integrated system, specifically for the railway track irregularity measurement application. The GNSS/INS integration in this application is simplified as a linear time-invariant stochastic system driven only by white Gaussian noise, and an analytical solution for the navigation errors in the Laplace domain is obtained by analyzing the resulting steady-state Kalman filter. Then, a time series of the error is obtained through a subsequent Monte Carlo simulation based on the derived error propagation model. The proposed analysis method is then validated through data simulation and field tests. The results indicate that a 1 mm accuracy in measuring the track irregularity is achievable for the GNSS/INS integrated system. Meanwhile, the influences of the dominant inertial sensor errors on the final measurement accuracy are analyzed quantitatively and discussed comprehensively.Qijin ChenQuan ZhangXiaoji NiuJingnan LiuSpringerOpenarticleInertial surveyingRelative measurement accuracyError propagation modelingSteady-state Kalman filterPrecise engineering surveyingTechnology (General)T1-995ENSatellite Navigation, Vol 2, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Inertial surveying Relative measurement accuracy Error propagation modeling Steady-state Kalman filter Precise engineering surveying Technology (General) T1-995
spellingShingle	Inertial surveying Relative measurement accuracy Error propagation modeling Steady-state Kalman filter Precise engineering surveying Technology (General) T1-995 Qijin Chen Quan Zhang Xiaoji Niu Jingnan Liu Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements
description	Abstract An aided Inertial Navigation System (INS) is increasingly exploited in precise engineering surveying, such as railway track irregularity measurement, where a high relative measurement accuracy rather than absolute accuracy is emphasized. However, how to evaluate the relative measurement accuracy of the aided INS has rarely been studied. We address this problem with a semi-analytical method to analyze the relative measurement error propagation of the Global Navigation Satellite System (GNSS) and INS integrated system, specifically for the railway track irregularity measurement application. The GNSS/INS integration in this application is simplified as a linear time-invariant stochastic system driven only by white Gaussian noise, and an analytical solution for the navigation errors in the Laplace domain is obtained by analyzing the resulting steady-state Kalman filter. Then, a time series of the error is obtained through a subsequent Monte Carlo simulation based on the derived error propagation model. The proposed analysis method is then validated through data simulation and field tests. The results indicate that a 1 mm accuracy in measuring the track irregularity is achievable for the GNSS/INS integrated system. Meanwhile, the influences of the dominant inertial sensor errors on the final measurement accuracy are analyzed quantitatively and discussed comprehensively.
format	article
author	Qijin Chen Quan Zhang Xiaoji Niu Jingnan Liu
author_facet	Qijin Chen Quan Zhang Xiaoji Niu Jingnan Liu
author_sort	Qijin Chen
title	Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements
title_short	Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements
title_full	Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements
title_fullStr	Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements
title_full_unstemmed	Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements
title_sort	semi-analytical assessment of the relative accuracy of the gnss/ins in railway track irregularity measurements
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/a738e31d6134491eaaaa5bed9d6a3fcc
work_keys_str_mv	AT qijinchen semianalyticalassessmentoftherelativeaccuracyofthegnssinsinrailwaytrackirregularitymeasurements AT quanzhang semianalyticalassessmentoftherelativeaccuracyofthegnssinsinrailwaytrackirregularitymeasurements AT xiaojiniu semianalyticalassessmentoftherelativeaccuracyofthegnssinsinrailwaytrackirregularitymeasurements AT jingnanliu semianalyticalassessmentoftherelativeaccuracyofthegnssinsinrailwaytrackirregularitymeasurements
_version_	1718408217274351616

Semi-analytical assessment of the relative accuracy of the GNSS/INS in railway track irregularity measurements

Ejemplares similares