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Proceedings Paper

System based on fiber optic gravimeters for a measurement of gravitational field gradient vector for navigation of flying objects
Author(s): Yuri A. Bykovsky; Constantin A. Scvorchevsky; Andrey Y. Beskurnikov; Olga V. Poljakova; Alexander P. Grachev; Alexander V. Shutov
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Paper Abstract

There are many tasks, which are required simultaneously to measure value and direction of gravitation field vector in 3D space. For instance, the task of flying objects navigation by measurement of full gravitation field vector horizontal gradient. To solve this problem is suggested the system, consists of two remote fiber-optic gravimeters, situated in different ends of flying object. Fiber-optic gravimeter based on effect of influence of longitudinal strains of silicon single-mode fibers on lightwave phase shift. Fiber-optic gravimeter includes fiber-optic interferometers Mach-Zehnder and electronic scheme for measurement of phase shift. Sensitivity of this fiber-optic gravimeter is 10-7 g, where g-acceleration of free fall, if resolution of electronic scheme is 10-3 rad. As source of radiation for fiber-optic gravimeter is employed tunable diode laser on GaAlAs-GaAs with external dispertial cavity and frequency modulation of radiation. Frequency modulation of radiation is applied for measurement of phase shift in fiber-optic interferometers.

Paper Details

Date Published: 26 June 1997
PDF: 9 pages
Proc. SPIE 3087, Navigation and Control Technologies for Unmanned Systems II, (26 June 1997); doi: 10.1117/12.277218
Show Author Affiliations
Yuri A. Bykovsky, Moscow Engineering Physics Institute (Russia)
Constantin A. Scvorchevsky, Moscow Engineering Physics Institute (Russia)
Andrey Y. Beskurnikov, Moscow Engineering Physics Institute (Russia)
Olga V. Poljakova, Moscow Engineering Physics Institute (Russia)
Alexander P. Grachev, Moscow Engineering Physics Institute (Russia)
Alexander V. Shutov, Moscow Engineering Physics Institute (Russia)

Published in SPIE Proceedings Vol. 3087:
Navigation and Control Technologies for Unmanned Systems II
Scott A. Speigle, Editor(s)

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