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1 INTRODUCTION
Position fixing systems are considered as a strategic
key element of the International Maritime
Organizations (IMO) e‐Navigation strategy [1]. The
improvement and the indication of reliability have
beenidentifiedashighlevel user needs withrespect
to electronicposition fixing [2].Analyzing reliability
ofpositionandotherPNTparametersofavessel,not
only the ship‐side components but the whole
int
egrated PNT system needs to be considered [3].
The generic architecture of the maritime integrated
PNT System is shown in Fig. 1. It is the sum of
satellite‐based,ashoreandaboardcomponentsandits
relatedlinks.
Only the int
egrated use of these components
enablestheprovisionofposition,navigationandtime
information taking into account different
requirementsonaccuracyandreliabilitycomingfrom
differentmaritimeapplications.
Figure1.GenericarchitectureoftheIntegratedPNTSystem
ExistingandfutureWorldWideRadioNavigation
Systems (WWRNS) like GPS, GLONASS and
GALILEO are fundamental infrastructures for global
determination of position, navigation and timing
data. Additionally, shore‐side services as part of the
Maritime Service Portfolio (MSP) are used or
considered as candidates to improve the positioning
performance (augmentation services: e.g. IALA
Beacon DGNSS, RTK), to support the ba
ckup
functionality (backup services: e.g. e‐LORAN, R‐
Initial Realization of a Sensor Fusion Based Onboard
Maritime Integrated PNT Unit
R.Ziebold,Z.Dai,L.Lanca,T.Noack&E.Engler
InstituteofCommunicationsandNavigation,GermanAerospaceCentre(DLR),Neustrelitz,Germany
ABSTRACT:Thispa
perintroducesthebasicconceptofthePositionNavigationandTiming(PNT)Moduleas
futurepartofashipsideIntegratedNavigationSystem(INS).CoreofthePNTModuleisasensor fusionbased
processingsystem(PNTUnit).Thepaperwillfocusonimportantaspectsandfirstresultsoftheinit
ialpractical
realization of such a PNT Unit, including a realization of a Consistent Common Reference System (CCRS),
GNSS/IMUtightlycoupledpositioningresultsaswellascontingencyperformanceoftheinertialsensors.
http://www.transnav.eu
the International Journal
on Marine Navigation
and Safety of Sea Transportation
Volume 7
Number 1
March 2013
DOI:10.12716/1001.07.01.17