Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..12e...4l&link_type=abstract
Long Wavelength Astrophysics, 26th meeting of the IAU, Joint Discussion 12, 21 August 2006, Prague, Czech Republic, JD12, #4
Astronomy and Astrophysics
Astrophysics
Scientific paper
Introduction: We report on the design and construction of a unique low- frequency, wide-bandwidth system for study of the Earths Ionosphere. The Massachusetts Institute of Technology's Lincoln Laboratory and NRAO are collaborating to study turbulent properties of the Earth's Ionosphere through the technique of Bi-Static Radar observations of spacecraft. Methods: Lincoln Laboratory generates schedules for spacecraft tracking that are automatically transferred and executed by NRAO in Green Bank. The radar tracking system at Millstone, MA transmits radar signals toward spacecraft. In Green Bank, the spacecraft are also tracked and reflected signals captured. Disk packs are sent daily to Lincoln Laboratory for analysis. Four frequency bands, each 70 MHz wide, are simultaneously sampled, allowing study of the Ionosphere over a large range of frequencies. Results: We have demonstrated full automatic operation of the facility. The control system is based on exchange of files that are placed on the internet, allowing easy monitoring of the proper operation of the system by all collaborators. Discussion: The construction phase of the system is complete and the first results of the bi-static radar observations are presented. We plan further upgrades to the system sensitivity and will initiate low frequency mapping and monitoring observations
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