Referenced Items are not available for this document.
The proposed ALFA space-based imaging interferometer mission consists of 16 identical small satellites with dipole antennas and low frequency radio receivers, distributed in a spherical array 100 km in diameter, and placed in a nearly circular distant retrograde orbit about the Earth, with a typical range of 106 km. Each satellite communicates directly with a small (11 m), low-cost antenna at each DSN site, providing parallel data paths and continuous coverage. The mission communications and navigation support system consists of an X-band frequency division multiplex (FDM) TT&C segment that uses a common 50 bps uplink channel and 17 downlink channels of 500 kbps each. The TT&C segment supports noncoherent precision Doppler ranging. Intersatellite ranging in the navigation support subsystem is accomplished by using the common four tone ranging technique over a UHF channel in the ISM (Industrial Scientific Medical) band
Published in:
Aerospace Conference Proceedings, 2000 IEEE
(Volume:7
)
Date of Conference: 2000
- Page(s):
- 177 - 184 vol.7
- Meeting Date :
- 18 Mar 2000-25 Mar 2000
- ISSN :
- 1095-323X
- Print ISBN:
- 0-7803-5846-5
- INSPEC Accession Number:
- 6805569
- Conference Location :
- Big Sky, MT
- Digital Object Identifier :
- 10.1109/AERO.2000.879286
- Product Type:
- Conference Publications
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