Other
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989nascp3046..171k&link_type=abstract
In NASA, Relativistic Gravitational Experiments in Space p 171-178 (SEE N90-19940 12-90)
Other
Data Links, Deep Space, Gravitation, Radio Relay Systems, Space Probes, Space-Time Functions, Atomic Clocks, Carrier Frequencies, Frequency Standards, Radial Velocity, Radio Frequencies, Sine Waves
Scientific paper
Radio telecommunication links are used for communication with deep space probes. These links consist of sinusoidal carrier signals at radio frequencies (RF) modulated with information sent between the spacecraft and the earth. This carrier signal is a very pure and stable sinusoid, typically derived from an atomic frequency standard whose frequency and phase are used to measure the radial velocity of the probe and from this and other data types derive its trajectory. This same observable can be used to search for space-time distortions cased by low frequency (0.1 to 100 MHz) gravitation radiation. How such a system works, what its sensitivity limitations are, and what potential future improvements can be made are discussed.
Kursinski Robert E.
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