ACES will develop additional applications in different areas of research. A new method for mapping the Earth gravitational potential based on a measurement of the differential red-shift experienced by two clocks at two different locations will be demonstrated by ACES. The MWL will provide state-of-the-art performance for the comparison of distant clock (both space-to-ground and ground-to-ground). In particular, it will connect TAI laboratories and compare the best primary standards, contributing to the generation of atomic time scales. The ELT optical link will provide an additional time and frequency transfer system to perform clock comparison and ranging experiments. In combination with the ACES MWL, it will also allow studies of propagation delays in the atmosphere. A GNSS receiver will be part of the ACES payload. Directly connected to the ACES clock signal, the receiver will firstly secure orbit determination and clock positioning at the required accuracy level. Secondly, it will make available the frequency reference delivered by ACES to a wider community for applications in different areas of research. The on-board GNSS receiver will also support GNSS remote sensing applications (radio-occultation and coherent reflectometry).
ACES Scientific Applications
|Relativistic Geodesy||Demonstration of a new technique for mapping the Earth gravitational potential with a resolution better than 1 m based on measurements of the differential gravitational red-shift between clocks on ground.|
|Clock comparison and time transfer via ELT||
|Optical ranging via ELT||
Last update: 3 November 2011