Optical fiber gyroscope for automotive navigation

Author

Oho, Shigeru ; Kajioka, Hiroshi ; Sasayama, Takao

Author_Institution

Hitachi Res. Lab., Hitachi, Japan

Volume

44

Issue

3

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

698

Lastpage

705

Abstract

The use of an optical fiber gyroscope in automotive navigation is reported. The performance requirements for a navigational gyroscope are discussed in terms of the input range, resolution, and bias and scale errors. The OFG-3, an automotive optical fiber gyroscope prototype, is introduced, and its error sources are related to the gyroscope designs. The gyroscope is made of polarization maintaining fibers and incorporates optical phase modulation and synchronous demodulation techniques. The gyroscope electronics restrict the resolution and the bias error, while the optics dominate the scale error. The microcomputer in the electronics compensate for the scale error, and the OFG-3 meets navigational requirements. Automotive navigation has been demonstrated using the gyroscope in combination with a map-matching algorithm

Keywords

automotive electronics; computerised navigation; error analysis; fibre optic sensors; gyroscopes; microcomputer applications; optical fibre polarisation; OFG-3; automotive navigation; automotive optical fiber gyroscope; bias errors; error sources; input range; map-matching algorithm; microcomputer; optical phase modulation; performance requirements; polarization maintaining fibers; resolution; scale errors; synchronous demodulation; vehicle location; Automotive engineering; Demodulation; Gyroscopes; Navigation; Optical design; Optical fiber polarization; Optical fibers; Optical modulation; Phase modulation; Prototypes;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.406639

Filename

406639