Could GPS satellites be used to detect gravitational waves?

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SUMMARY

This discussion explores the feasibility of using GPS satellites to detect gravitational waves. While GPS satellites possess precise atomic clocks and measure their positions relative to each other, their accuracy is insufficient for detecting the expected distortions of gravitational waves, which are on the order of 10-22. The conversation highlights the limitations of GPS technology and suggests looking into the Laser Interferometer Space Antenna (LISA) as a more suitable space-based alternative for this purpose.

PREREQUISITES
  • Understanding of gravitational wave detection principles
  • Familiarity with GPS technology and its limitations
  • Knowledge of atomic clock functionality
  • Awareness of LISA (Laser Interferometer Space Antenna) mission objectives
NEXT STEPS
  • Research the principles of gravitational wave detection using probe masses
  • Explore the technical specifications and capabilities of LISA
  • Investigate the limitations of GPS positioning accuracy in scientific applications
  • Examine current advancements in space-based gravitational wave observatories
USEFUL FOR

Researchers in astrophysics, aerospace engineers, and anyone interested in the intersection of satellite technology and gravitational wave detection.

haael
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To detect gravitational waves, we set up some probe masses in laboratories far from each other and measure distance between them. Why not use GPS satellites for that? I mean: they have precise atomic clocks, they constantly measure their position relative to each other and they are as far away from each other as possible with current technology.

Has it already been done, by any chance? Has anyone tried to use GPS satellites orbit disturbances to detect gravitational waves?
 
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Their positioning system is not nearly accurate enough - the distortions expected are of the order of 10-22 and geosynchonous orbit is something like 70000km across - giving a maximum displacement of the order of femtometers(?)

However:
http://imagine.gsfc.nasa.gov/docs/features/topics/gwaves/gwaves.html
 
Last edited by a moderator:
For something space-based that could do the job, look up LISA.

http://lisa.nasa.gov/

It's current status seems to be in flux, people are still trying to make it happen, I don't know any of the details.
 

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