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EnglishWe discuss noise in Doppler tracking of deep space probes and provide a detailed noise model for Doppler radio science experiments. The most sensitive current experiments achieve fractional frequency fluctuation noise of about 3x10^-15 at 1000s integration time, corresponding to better than 1 micron per second velocity noise. Our noise model focuses primarily on the Fourier range [10^-4 – 1] Hz, but we briefly discuss noise in lower-frequency observations. We indicate applications of the noise model to experiment planning, identify phenomena limiting current Doppler sensitivity, and discuss the prospects for significant sensitivity improvements.
| Titolo: | Spacecraft Doppler Tracking: Noise Budget and Accuracy Achievable in Precision Radio Science Observations | |
| Autore/i: | S. W. ASMAR; J. W. ARMSTRONG; L. IESS; TORTORA, PAOLO | |
| Autore/i Unibo: | ||
| Anno: | 2005 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1029/2004RS003101 | |
| Abstract: | We discuss noise in Doppler tracking of deep space probes and provide a detailed noise model for Doppler radio science experiments. The most sensitive current experiments achieve fractional frequency fluctuation noise of about 3x10^-15 at 1000s integration time, corresponding to better than 1 micron per second velocity noise. Our noise model focuses primarily on the Fourier range [10^-4 – 1] Hz, but we briefly discuss noise in lower-frequency observations. We indicate applications of the noise model to experiment planning, identify phenomena limiting current Doppler sensitivity, and discuss the prospects for significant sensitivity improvements. | |
| Data prodotto definitivo in UGOV: | 2005-10-02 14:32:14 | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/11585/2698
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