Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsa32a..04b&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SA32A-04
Physics
2439 Ionospheric Irregularities
Scientific paper
The Coherent Electromagnetic Radio Tomography (CERTO) instrument is a Tri-Band Beacon (TBB) that radiates unmodulated radio frequency carriers at 150.012, 400.032, and 1066.752 MHz. As part of the FORMOSAT-3 program, the six Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) satellites were launched in April 2006 with the TBB instrument along with a GPS occultation receiver (GOX) and a Tiny Ionospheric Photometer (TIP). Each of these instruments is capable of measuring integrated plasma density parameters for the F-region. The COSMIC satellites were initially deployed into 520 km orbits with 72 degrees inclination all in the same orbit plane. Each satellite will be boosted up to 800 km altitude with month-long time delays to allow separation of the orbits into six planes. Ground based receivers in Alaska, Virginia, Peru, and Kwajalein have recorded the radio beacon signals from the COSMIC CERTO beacons to determine the signal and antenna pattern specifications and to provide preliminary measurements of ionosphere TEC and radio scintillations. Because of power limitations and radio interference, TBB/CERTO frequency operations must be scheduled for passes over ground receivers. The ionospheric radio beacon data has been primarily obtained using the VHF and UHF CERTO frequencies. These data are complementary to ground based incoherent scatter radar (ISR) and ionosonde measurements as well as the GOX and TIP sensors on the satellites. Both tomography and inverse diffraction algorithms have been used to convert the radio beacon measurements into estimates of ionospheric electron density structures.
Bernhardt Paul A.
Garner T. W.
Gaussiran Thomas L.
Groves K.
Secan J.
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