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ISS Research Project @ JPL
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Atomic Clock Ensemble in Space (ACES) NASA Collaboration
   

  JPL_ground

 

ACES

Objectives:

  • Contribute to ESA objectives to validate a space clock to the 10^-16 level; perform frequency transfer to the Earth at the same stability level; and to test general and special relativity to high accuracy.
  • Establish an ESA-NASA collaboration on Fundamental Physics in Space.

Relevance/Impact:

  • JPL_ground  

     

    Microwave Link
     
    Improved knowledge about fundamental laws of nature.
  • Improved technology for space science (laser ranging, geodesy) and space exploration applications (autonomous navigation, formation flying).
  • Improved technology for applications of societal, commercial, and national security importance (navigation, time-keeping, GPS, metrology).
  • High educational and outreach value to validate importance of ISS research and inspire the next generation.
  JPL_ground

 

JPL Hg-ion clock

Development Approach:

  • ACES flight hardware developed by CNES and European partner nations.
  • ESA will deliver a microwave ground link to JPL to integrate in frequency standards laboratory.
  • Links also at 5 additional locations.
  • JPL scientists will compare the ACES clock stability aboard the ISS with the JPL Hg-ion clock using the microwave link and participate in data analysis and publications.
  • Launch is planned in 2013 followed by a 12-18 month operations phase.

 

 
acrobat icon  Atomic Clock Ensemble in Space (ACES) NASA Collaboration
 


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