Relativity in the global positioning system

被引：264

作者：

Neil Ashby

机构：

[1] Dept. of Physics, University of Colorado, Boulder

来源：

Living Reviews in Relativity | 2003年 / 6卷 / 1期

关键词：

Fractional Frequency Shift; Sagnac Effect; Satellite Clock; Eccentricity Effects; ECEF Frame;

D O I：

10.12942/lrr-2003-1

中图分类号：

学科分类号：

摘要：

The Global Positioning System (GPS) uses accurate, stable atomic clocks in satellites and on the ground to provide world-wide position and time determination. These clocks have gravitational and motional frequency shifts which are so large that, without carefully accounting for numerous relativistic effects, the system would not work. This paper discusses the conceptual basis, founded on special and general relativity, for navigation using GPS. Relativistic principles and effects which must be considered include the constancy of the speed of light, the equivalence principle, the Sagnac effect, time dilation, gravitational frequency shifts, and relativity of synchronization. Experimental tests of relativity obtained with a GPS receiver aboard the TOPEX/POSEIDON satellite will be discussed. Recently frequency jumps arising from satellite orbit adjustments have been identified as relativistic effects. These will be explained and some interesting applications of GPS will be discussed.

引用

共 24 条

[11] Buisson J.A., Easton R.L., McCaskill T.B., Initial Results of the NAVSTAR GPS NTS-2 Satellite, Proceedings of the 9th Annual Precise Time and Time Interval Applications and Planning Meeting, pp. 177-200, (1977)
[12] Epstein M., Stoll E., Fine J., Study of SVN43 clock from 06/18/00 to 12/30/00, Proceedings of the 33rd Annual Precise Time and Time Interval Systems and Applications Meeting, Long Beach, Nov. 2001, (2001)
[13] Fitzpatrick P., The Principles of Celestial Mechanics, (1970)
[14] Fliegel H.F., DiEsposti R.S., GPS and Relativity: An Engineering Overview, (1996)
[15] Garland G.D., The Earth's Shape and Gravity, (1965)
[16] Hulse R.A., Taylor J.H., Discovery of a pulsar in a binary system, Astrophys. J., 195, (1975)
[17] Kraus J.D., Antennas, (1988)
[18] Lambeck K., Geophysical Geodesy: The Slow Deformations of the Earth, pp. 13-18, (1988)
[19] Malys S., Slater J., Maintenance and Enhancement of the World Geodetic System 1984, Proceedings of the 7th International Technical Meeting of the Satellite Division of the Institute of Navigation, Sept. 20-23, Salt Lake City, UT (ION GPS-94), pp. 17-24, (1994)
[20] Mashhoon B., Nonlocal Theory of Accelerated Observers, Phys. Rev. A, 47, pp. 4498-4501, (1993)

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