A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation

Projectiles are subjected to a high acceleration shock at launch (20,000 g and higher) and can spin very fast. Thus, the components of onboard navigation units must therefore withstand such constraints in addition to being inexpensive. This makes only a few inertial sensors suitable for projectiles...

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Autores principales:	Nabil Jardak, Ronan Adam, Sébastien Changey
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	gyroless initialization magnetometer navigation observability projectiles Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/36029f6def544c5fb6bfb4c667ff146f
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id	oai:doaj.org-article:36029f6def544c5fb6bfb4c667ff146f
record_format	dspace
spelling	oai:doaj.org-article:36029f6def544c5fb6bfb4c667ff146f2021-11-25T18:56:50ZA Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation10.3390/s212274871424-8220https://doaj.org/article/36029f6def544c5fb6bfb4c667ff146f2021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7487https://doaj.org/toc/1424-8220Projectiles are subjected to a high acceleration shock at launch (20,000 g and higher) and can spin very fast. Thus, the components of onboard navigation units must therefore withstand such constraints in addition to being inexpensive. This makes only a few inertial sensors suitable for projectiles navigation. Particularly, rate gyroscopes which are gun-hardened and have an appropriate operating range are not widely available. On the other hand, magneto-resistive sensors are inexpensive and can satisfy both gun-hardening and operating range requirements, making them an alternative for angular estimation in guided projectiles. This paper presents a gyroless navigation algorithm for projectiles. The lack of gyroscope is handled by the usage of attitude kinematics computed over past attitude estimates of the filter, coupled with a measurement model based on magnetometer and GPS observations of the attitude. The observability of the attitude when considering non-calibrated magnetometers and its dependency on the initialization is addressed. Then, to cope with the initialization dependency of the filter, we proposed a multi-hypothesis initialization algorithm. In terms of performance, the algorithm is shown to provide a high-rate navigation solution with an interesting performance.Nabil JardakRonan AdamSébastien ChangeyMDPI AGarticlegyrolessinitializationmagnetometernavigationobservabilityprojectilesChemical technologyTP1-1185ENSensors, Vol 21, Iss 7487, p 7487 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	gyroless initialization magnetometer navigation observability projectiles Chemical technology TP1-1185
spellingShingle	gyroless initialization magnetometer navigation observability projectiles Chemical technology TP1-1185 Nabil Jardak Ronan Adam Sébastien Changey A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation
description	Projectiles are subjected to a high acceleration shock at launch (20,000 g and higher) and can spin very fast. Thus, the components of onboard navigation units must therefore withstand such constraints in addition to being inexpensive. This makes only a few inertial sensors suitable for projectiles navigation. Particularly, rate gyroscopes which are gun-hardened and have an appropriate operating range are not widely available. On the other hand, magneto-resistive sensors are inexpensive and can satisfy both gun-hardening and operating range requirements, making them an alternative for angular estimation in guided projectiles. This paper presents a gyroless navigation algorithm for projectiles. The lack of gyroscope is handled by the usage of attitude kinematics computed over past attitude estimates of the filter, coupled with a measurement model based on magnetometer and GPS observations of the attitude. The observability of the attitude when considering non-calibrated magnetometers and its dependency on the initialization is addressed. Then, to cope with the initialization dependency of the filter, we proposed a multi-hypothesis initialization algorithm. In terms of performance, the algorithm is shown to provide a high-rate navigation solution with an interesting performance.
format	article
author	Nabil Jardak Ronan Adam Sébastien Changey
author_facet	Nabil Jardak Ronan Adam Sébastien Changey
author_sort	Nabil Jardak
title	A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation
title_short	A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation
title_full	A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation
title_fullStr	A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation
title_full_unstemmed	A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation
title_sort	gyroless algorithm with multi-hypothesis initialization for projectile navigation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/36029f6def544c5fb6bfb4c667ff146f
work_keys_str_mv	AT nabiljardak agyrolessalgorithmwithmultihypothesisinitializationforprojectilenavigation AT ronanadam agyrolessalgorithmwithmultihypothesisinitializationforprojectilenavigation AT sebastienchangey agyrolessalgorithmwithmultihypothesisinitializationforprojectilenavigation AT nabiljardak gyrolessalgorithmwithmultihypothesisinitializationforprojectilenavigation AT ronanadam gyrolessalgorithmwithmultihypothesisinitializationforprojectilenavigation AT sebastienchangey gyrolessalgorithmwithmultihypothesisinitializationforprojectilenavigation
_version_	1718410515707854848

A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation

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