A tactical fiber optic gyro with all-digital signal processing

Author

Perlmutter, Michael S.

Author_Institution

Electron. Syst. Div., Northrop Corp., Norwood, MA, USA

fYear

1994

fDate

11-15 Apr 1994

Firstpage

170

Lastpage

175

Abstract

Northrop´s Electronics Systems Division has built and tested a tactical fiber optic gyro (FOG) with all-digital signal processing. The Northrop FOG uses 160 meters of polarization maintaining optical fiber wound on a spool 29 mm in diameter. Without any data compensation, this FOG has demonstrated excellent scale factor stability and non-linearity (<100 ppm) over a high dynamic range (±1400°/s), low random walk (<0.02°/√h), and outstanding bias stability over temperature and day-to-day (<1°/h). An inertial measurement unit (IMU) utilizing a FOG/MSA (micro silicon accelerometer) cluster has been developed and integrated with a Global Positioning System (GPS) receiver. Testing was done to demonstrate performance of the sensor and IMU over the military environment

Keywords

fibre optic sensors; gyroscopes; inertial navigation; light polarisation; military equipment; optical fibres; radio receivers; radionavigation; satellite relay systems; signal processing; 14.5 mm; Global Positioning System; Northrop; all-digital signal processing; bias stability; high dynamic range; inertial measurement unit; low random walk; micro silicon accelerometer; military environment; nonlinearity; polarization maintaining optical fiber; scale factor stability; tactical fiber optic gyro; testing; Dynamic range; Electronic equipment testing; Global Positioning System; Optical fiber polarization; Optical fiber testing; Optical fibers; Optical signal processing; Stability; System testing; Wounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Position Location and Navigation Symposium, 1994., IEEE

Conference_Location

Las Vegas, NV

Print_ISBN

0-7803-1435-2

Type

conf

DOI

10.1109/PLANS.1994.303311

Filename

303311